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Zagazig UniversityFaculty of ScienceGeologist Up TeamDrilling Operations of Ground Water WellsSubmitted byMohamed Mahmoud El-ShoraMud Engineer @ National Egyption Drilling and Petroleum Services Co. (DASCO)

Introduce MyselfMud Engineer at National Egyptian Drilling and Petroleum Services Co. DASCO.Well site Geologist at National Egyptian Drilling and Petroleum Services Co. DASCO.Advanced Diploma, Alexandria University, Geophysics, 2013.BSC, Tanta University, Special Geology, 2012.Founder & President of AAPG_TUSC, 2011.

Audiences ExpectationsAt the first page of your notebook write down the following:Your expectations from this presentation.

At the end of the course evaluate the deliverable against your expectations.

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Session Goals As a result of participating in this presentation, attendees willIntroduction about Hydrology.Planning any project by scientific method.Understand how Ground Water Wells Drilled.Types of Pumping Test.How you can Write the daily Report.

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IntroductionWhen a person meets another Person. He asks, Do you speak English, Arabic or French.etc.? In Geology you have to forget the language!! This collections of slides are The language of geologist. #You_Will_Learn_Geologists_Language!!At recent days youve heard many advertisements by ground water companies wanting to hire you, so you should be knowing more and more about ground water wells.In this session we will introduce important topics about ground water Wells.Firstly you should be known ground water terminology to #Speak_The_Same_Language.

Ground Water Wells Definition: A water well is a hole, shaft, or excavation used for the purpose of extracting ground water from the subsurface.Types of Production ground water wells:1st Type: Artesian wells. 2nd Type: Flowing Artesian Wells.3rd Type: Water Table Wells.

Ground Water WellsWhats the difference between Artesian Well, Flowing Artesian Wells and Water Table Wells?

Note That: All flowing wells are artesian, but not all artesian wells are flowing wells.

Now we need to know How we can drill a well??? Lets Go to Know

Drilling Is a cutting process that uses a drill bit to cut or enlarge a hole of circular cross-section in earth layers.The hole is drilled by simultaneously applying weight to the drill bit and rotating the bit.Before Starting Drilling You Need Data.

The driller can place the bit onto the bottom of the well and apply weight using the lifting system.

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DrillingDrilling

Green Field

Brown Field

Exploration Well

Production Well

Why & where We Drill?To know The Sub-Surface (Rocks Structures Fossils - etc.).To Get The Black Gold (Oil Natural Gas) (Onshore & Offshore).To Get Under Ground Water (Onshore).Exploration of Minerals as (Gold Silver Iron - .etc.) (Onshore).

Now we need a Rig!!!!!

Rotary Drilling Rig Components We are Live and working day and night in location, so we need electricity source.To reach the TD we need Series of pipes connected together (Drill String).Raising and Lowering of the Drill string (Hoisting System).Drilling as we know is applying weight to the drill bit and rotating the Bit, So we need rotating source or rotating system.When we drill we need fluid to carrying the cutting from the bottom of hole to surface so we need circulation system.

Rotary Drilling Rig Components

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Rotary Drilling Rig Components

Rotary Drilling Rig Components Together they perform the following functions: Lower the bit into the hole and withdraw it.Place weight on the Bit so it can penetrate the formations more effectively.Transmit a rotating action to the Bit.Conduct the Mud under pressure from the surface to the Bit.

BHABit

Bit SubStabilizer & ReamerDrill CollarCross Over SubHeavy Weight Drill PipeDrill PipeKelly Saver SubKelly

bit n: the cutting or boring element used in drilling oil and gas wells.bit programn: a plan for the expected number and types of bits that are to be used in drilling a well.bit sub n: a sub inserted between the drill collar and the bit.14

Rotary Drilling Rig Components Consist of the following: (Drawworks Crown Block Traveling Block Drilling Line Hook - Elevator)

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Rotary Drilling Rig Components Consist of the following: (Swivel Kelly Kelly Bushing Master Bushing Rotary Table)

Rotary Drilling Rig Components

Rig CrewTool Pusher.Well Site Geologist (Site Engineer).Mud Engineer.Mechanical Engineer &/or Mechanical.Electric Engineer &/or Electrician.Driller.Derick Man. Floor Man.Kitchener.

What Hydrologists Do?May be involved in both field investigations and office work.Persons trained in hydrology may have a wide variety of job titles. (Well Site Geologist (Site Engineer) - Mud Engineer- Tool Pusher)Job Descriptions: Making development & pumping tests for the groundwater s wells and Daily Reports.Supervision of the drilling process & Sample description.Supervision of the drilling fluid s characteristics.Concomitant for using E-log system.

Apply scientific knowledge and mathematical principles to: Find water supplies for cities or irrigated farms, or controlling river flooding or soil erosion.Solve water-related problems in society: problems of quantity, quality and availability. Or, they may work in environmental protection: preventing or cleaning up pollution or locating sites for safe disposal of hazardous wastes.

Hydrologists play a vital role in finding solutions to water problems, and interesting and challenging careers are available to those who choose to study hydrology.Scientists and engineers in hydrology may be involved in both field investigations and office work.

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The Well Life CycleDesign:Agree the well objectives, schedule, cost, order equipment, place contracts for the rig and services, prepare the Location.Construction: Drilling: The well is created by drilling a hole, isolating with casing and cementing job and repeating this process until reach TD. Wireline Logging: (Electric Logging and interpret this log).Design of Well: (End Point of Intermediate Casing and Design of Filters).Installing Filters: According to design of well.Washing & Development: wash the well by clear water then development using compressor and pump.Pump Test: (Step Pump Test Long Duration Pump Test Recovery Test).Commission: The well is handed over to operations and connected to the process facilities.

Drop Pin Input Latitude and Longitude of your location on GPS.Detect the locations of wells and roads. Then Prepare the site roads and wells locations.

Prepare the Location

Drilling Fluid The understanding of the uses of drilling fluid can make a drilling operation successful.Functions of Drilling Fluid:Remove the cuttings from the bottom of the hole and carry them to the surface.Cool and lubricate the drill string and bit.Control formation pressure.Seal permeable formations.Minimize settling of cuttings and weight material in suspension when circulation is temporarily stopped. Support and protect the walls of the hole.Facilitate cementing and completion.

Types of Drilling Fluid

This is the major type of mud system. It consists of a continuous liquid phase of water in which clay materials are suspended. A number of reactive and nonreactive solids are added to obtain special properties.

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Mixing Mud

Properties of Drilling Fluid

Physical Properties (Mud Balance Test)

Measure of the hydrostatic pressure of the mud column.Density is reported also in pounds per gallon, specific gravity, and pounds per cubic foot.

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Physical Properties (Marsh Funnel Viscosity Test)

Viscosity is a measure of the internal resistance of a drilling fluid. This internal resistance, or inertia, is a result of the attractions of molecules in a liquid, and is a measure of the combined effects of these attractions and the natural cohesion of suspended particles. The greater the internal resistance, the greater the viscosity.The Marsh Funnel is an instrument used to measure what is commonly called "Funnel Viscosity." The Marsh Funnel viscosity is reported as the number of seconds required for a given fluid to flow 1 quart of fluid through the calibrated orifice at the end of the funnel.

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From The Memory On the beach do you remember when you try to drill a hole with your hands.

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AnnulusThe space around a pipe in a well bore, sometimes termed the annular space.

Well Bore

Pipe

annular pressure n: pressure in an annular space.

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CasingDefinition: Steel pipe placed in an oil, gas and Ground Water wells to prevent the wall of the hole from caving in, to prevent movement of fluids from one formation to another and to aid in well control.The Zones which need to seal off by Casing Pipe: (high-pressured zones, weak and fractured formations, unconsolidated formations and sloughing shales).

Consequently, wells are drilled and cased in several steps to seal off these troublesome zones and to allow drilling to the total depth. Different casing sizes are required for different depths, the five general casings used to complete a well are: (Conductor Casing, Surface casing, Intermediate casing and Production casing (Blank and Screen).

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Conductor CasingThe outermost casing.The main purpose: Hold back the unconsolidated surface formations and prevent them from falling into the hole. The conductor pipe is cemented back to the surface. The conductor pipe size is from 16 - 20 in diameter.

On offshore platforms, conductor pipe is usually 20 in. in diameter and is cemented across its entire length. Generally. a 16-in. pipe is used in shallow wells and a 20-in. in deep wells. and it is either used to support subsequent casings and wellhead equipment or the pipe is cut off at the surface after setting the surface casingWhere shallow water or gas flow is expected, the conductor pipe is fitted with a diverter system above the flowline outlet. This device permits the diversion of drilling fluid or gas flow away from the rig in the event of a surface blowout. The conductor pipe is not shut-in in the event of fluid or gas flow, because it is not set in deep enough to provide any holding force. The conductor pipe, which varies in length from 40 to 500 ft. (12.192 to 152.4 m) onshore and up to 1,000 ft (304.8 m) offshore, is 7 to 20 in. in diameter.

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Surface Casing (Pump House)The principal functions: Hold back unconsolidated shallow formations that can slough into the hole and cause problems. It is generally set in competent rocks, such as hard limestone or dolomite, so that it can hold any pressure that may be encountered between the surface casing seat and the next casing seat. Cemented back to the surface. Sizes of the surface casing vary from 7 to 16 in diameter. The Most Common Sizes is 11 3/4 and 13 3/8 in diameter.

Isolate the Surface water-bearing formations Because we need the Deep water-bearing formations. Setting depths of the surface casing vary from 200 to 900 m . On land. surface casing is usually cemented to the surface. For offshore wells, the cement column is frequently limited to the kickoff point.

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Intermediate Casing Is set at a depth between the surface and production casings. The main reason for setting intermediate casing is to case off the formations that prevent the well from being drilled to the total depth. Troublesome zones encountered include those with abnormal formation pressures, lost circulation, unstable shales and salt sections. Intermediate casing varies in size from 7 to 11 3/8 in outside diameter. It is commonly cemented to top of overlap between intermediate casing and surface casing.

When abnormal formation pressures are present in a deep section of the well. intermediate casing is set to protect formations below the surface casing from the pressures created by the drilling fluid specific weight required to balance the abnormal pore pressure. Similarly, when normal pore pressures are found below sections having abnormal pore pressure, an additional intermediate casing may be set to allow for the use of more economical, lower specific weight, drilling fluids in the subsequent sections. After a troublesome lost circulation, unstable shale or salt section is penetrated, intermediate casing is required to prevent well problems while drilling below these sections. Longer cement columns are sometimes necessary to prevent casing buckling.

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Production Casing (Filters)Filters (Screen and Blanks) may be Stainless Steel or PVC in type.Production casing is set through the prospective productive zones except in the case of open-hole wells. According to design of well using log interpretation and sample descriptions.Screen designed to set in front of production zones.Blanks designed to isolate troublesome zones such as unstable shale.Filters Common Size 6 5/8 and 8 5/8 in diameter.

Casing AccessoriesGuide Shoe (G.S).Float Collar (F.C).Plugs (Top Plug - Bottom Plug).Centralizers.Cement Baskets.Cementing Head.

Cement plugs consist of an aluminum body encased in molded rubber. Two plugs are usually contained in the cementing head to facilitate the operations.

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Cement Mixing and Pumping Operations:

Setting Casing & Cementing JobOnce casing is set and circulation has been assured.The bottom plug is released, which is immediately followed by the cement. The top plug is released when all the cement has been pumped. It is dropped on top of the cement, followed by drilling mud, to displace the cement from the casing. When the bottom plug reaches the float collar, the diaphragm in the plug ruptures to permit the cement to proceed down the casing and up the annulus. This plug causes a complete shut-off when it reaches the float collar.Pumping is stopped as soon as there is a positive indication (pressure increase) that the top plug has reached the float collar.

The following procedures are conducted when completing a primary cement job. Once casing is set and circulation has been assured, is to pump a 10 to 15 barrel spacer ahead of the bottom plug, which is immediately followed by the cement. The spacer serves as a flushing agent and provides a spacer between the mud and cement and removal of wall cake and flushes the mud ahead of the cement, thereby lessening contamination.The top plug, which is solidly constructed, is released when all the cement has been pumped. It is dropped on top of the cement, followed by drilling mud, to displace the cement from the casing Cement plugs consist of an aluminum body encased in molded rubber. Two plugs are usually contained in the cementing head to facilitate the operations.

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Circulating pressures while mixing and displacing from the casing to the annulus.

Record of the circulating pressures while mixing and displacing from the casing to the annulus. To ensure good cement circulation and drilling mud displacement, movement of the casing, either by reciprocation or rotation, may be continued throughout the pumping and displacement operations.

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Cementing Job PurposeBonds the casing to the formation.Protects the producing formations. Helps in the control of blowouts from high-pressure zones. Seals off troublesome zones (i.e. lost circulation zones Unstable Shale).Forms a seal in the event of a kick during drilling.

Break

Bit ProgramA plan for the expected number and types of bits that are to be used in drilling a well.

8 12 17 26Casing Size in.Hole Size in.20(22 - 24 - 26)13 3/8(16 - 17 )11 (12 - 13 3/8 - 13 - 13 - 14 - 15 )9 5/8(11 5/8 - 12 - 13 3/8 -13 )8 5/8(9 5/8 - 10 5/8 - 11 5/8 12 )6 5/8(8 - 9 5/8)

bit program n: a plan for the expected number and types of bits that are to be used in drilling a well.

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Drilling for Conductor CasingAfter we finished from preparing of site, starting Drilling Operations.Drilling with Bit size 8 to reach setting depths of the conductor casing which is vary from 200 to 900 m according to contract and well design. Then opening (enlarge) of hole with Bit size 12 then Bit size 17 and finally with Bit size 26.Reaming a hole with stabilizer size 26.Preparing Conductor casing for installation in Hole.Run In Hole Casing size 20 and Complete Cementing Job.W.O.C (Duration of Waiting is 36 hours).

Drilling to Target DepthAfter duration of W.O.C is completed we start to drilling Float Collar, Cement in last casing pipe & Guide Shoe.Check properties of Mud and maintain it, Mixing New Volume of Drilling Fluid.Run In Hole Drill String With Bit Size 8 and Continuous drilling of Well until reach the TD.

Sample Description

Sample DescriptionRock Name: Color, Gain Size, Hardness, Any Accessories.Rock Name (Sand Stone - Lime Stone - Dolomitic Lime Stone Dolomite Shale Clay Chert Coal - Fossiliferous Lime Stone - Calcareous Shale - Calcareous S.S..Etc).Color When determining the color of a sample, inspect the rock when wet. A color chart is useful, Useful indicator of Depositional Environment, especially in argillaceous rocks (Clay Stone & Shale). Gain Size (V. Fine Fine Medium Course V. Course).Hardness (Hard - V. Hard).Accessories (Silt - Chert - Coal..Etc).

Claystone/Shale:The major difference between these rocks is fissility. A claystone is a structure less mass of clay minerals. A shale is finely laminated clay minerals exhibiting fissility and showing strong parallelism.

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Geologic Rock Symbols

Wireline Logging (Electric Log) Logging is one of most important step in well life cycle.Tools are run in the hole on the end of a wireline.Information is relayed back to the surface via the wireline.Tools of Logging: ( NGR R 16 R 64 SP).Purpose of Logging:Identify the underling layers.Detect zones of Aquifer.Use to determine casing Point.Making a design of well (Filters & Blanks).

casing point n: the depth in a well at which casing is set, generally the depth at which the casing shoe rests.The most widely used method of formation evaluation is wireline logging.Tools are run in the hole on the end of a wireline.Information is relayed back to the surface via the wireline.Logs can interpret lithology, porosity, permeability, fluid type and sometimes even the best parts of the Aquifer.Log also measure pressures, temperatures, and hole size.

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Drilling for Surface Casing After we finished from step of wireline logging and interpretation of log, starting Drilling for surface Casing Operations as the following procedures: Opening (enlarge) of hole with Bit size 12 then Bit size 17 .Reaming a hole with stabilizer size 17 .Preparing Surface casing for installation in Hole.Run In Hole Casing size 13 3/8 and Complete Cementing Job.(W.O.C).

casing point n: the depth in a well at which casing is set, generally the depth at which the casing shoe rests.50

Drilling For Intermediate Casing After duration of W.O.C is completed we start to drilling Float Collar, Cement in last casing pipe & Guide Shoe.Check properties of Mud and maintain it, Mixing New Volume of Drilling Fluid.Run In Hole Drill String With Bit Size 12 and Continuous drilling of Well until reach the end point of Intermediate Casing. Reaming a hole with stabilizer size 12 .Preparing Intermediate casing for installation in Hole.Run In Hole Casing size 9 5/8 and Complete Cementing Job.(W.O.C).

casing hanger n: a circular device with a frictional gripping arrangement of slips and packing rings used to suspend casing from a casing head in a well.51

Drilling for Production Casing Filters (Blank Screen)After duration of W.O.C is completed we start to drilling Float Collar, Cement in last casing pipe & Guide Shoe.Check properties of Mud and maintain it, Mixing New Volume of Drilling Fluid.Run In Hole Drill String With Bit Size 8 and Continuous drilling of Well until reach the TD of well.Reaming a hole with stabilizer size 8 .Preparing Screen and Blank for installation in Hole.Run In Hole Casing size 6 5/8 and hanged it using Liner Hangar.

cased hole n: a wellbore in which casing has been run.52

Groundwater Wells Design Area: East Owinat.Total Depth: 300 or 350 m.Casing Size / Type : 12 / Galvanized Iron 10 280 mm / PVC (polyvinyl chloride) or ST. ST (Stainless Steel).The Connection Between the two types of casing is called (Reducer 12/10).Annulus Fill With Gravel Pack except at least 2 m from surface.When we installation of Gravel Pack into the Annulus of well, start Circulation Mud to remove the smallest size grains of gravel pack and make it well sorted.

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101010121012/10

settle the gravel pack around the well screen. 53

Gravel Pack Gravel pack settle around the well screen.Size from 5 mm to 7 mm.Purpose of it; keeps fine sediments Fine Sand & Silt out of the well and provides a clean and unrestricted flow path for ground water. Gravel Pack Installation:1st Original Manual Method.2nd Conversely Cycle.

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101010121012/10

Groundwater Wells Design Area: Alfarafra Oasis.Total Depth: 750 or 850 m.Casing Size / Type : Conductor Casing Size 20 / Steel.Surface Casing Size 13 3/8 / Steel.Intermediate Casing Size 9 5/8 / Steel.Production Casing (Blank & Screen) Size 6 5/8 / Stainless Steel.Finally Sand Trap Size 6 5/8 / Stainless Steel.Annulus Around All casing Type and Size Fill With Cement; except Production casing size 6 5/8.

9 5/820

6 5/86 5/86 5/86 5/86 5/8

13 3/8

settle the gravel pack around the well screen. 55

Groundwater Wells Design Area: Sinai.Total Depth: 1150 m.Casing Size / Type : Conductor Casing Size 20 / Steel.Surface Casing Size 11 3/4 / Steel.Production Casing (Blank & Screen) Size 8 5/8 / Stainless Steel.Finally Sand Trap Size 8 5/8 / Stainless Steel.Annulus Around All casing Type and Size Fill With Cement; except Production casing size 8 5/8.

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8 5/88 5/88 5/88 5/88 5/8

11 3/48 5/88 5/88 5/8

settle the gravel pack around the well screen. 56

Groundwater Wells Design Area: Any Drinking Water Company.Total Depth: 200 m.Casing Size / Type : Conductor Casing Size 20 / Steel.Production Casing (Blank & Screen) Size 12 / Stainless Steel.Finally Sand Trap Size 12 / Stainless Steel.Annulus Around Conductor casing Size 20 and Annulus Around Fill With Cement; except Production casing size 12 fill with gravel pack and there is an over lap between Conductor Casing and Production Casing fill with Granular Bentonite (3 5)m.

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1212121212

12121212121212

settle the gravel pack around the well screen. 57

Washing Using clear water (fresh water) and Liquid Soap.By injection of fresh water in the well by using pump.Then connect Air compressor to starting the 1st development stage.And we can add soup in stage of development using Air Compressor.

Groundwater Wells Development After the well Casing, well Screen, and gravel pack have been installed, the well is developed to clean the borehole and casing of drilling fluid and to properly settle the gravel pack around the well screen. Development Procedures: Adding Chemicals as (Sodium Hexameta Phosphate - HCl).Compressor Development.Pump Development.

Development Procedures: 1st Step Adding Chemicals as (Sodium Hexameta Phosphate):Adding 1 sack from Hexameta for 1 m^3 of water according to the volume of filters e.g. ( Volume of mud in filters = 8 m^3, So; No. of Hexameta Sacks equal 8 sacks added to 8 m^3 of water).Then still (24 hours) for complete reaction between Sodium Hexameta Phosphate and drilling mud in Aquifer and Gravel Pack.Applications/Functions:Can disperse mud, sediment and clay from the producing formation and gravel pack in the screened interval. Can reduce viscosity and gel strength of drilling fluids.Helps reduce development time.Helps increase well yield and capacity.

Development Procedures: 1st Step Adding Chemicals as (HCl):Acidize : to treat formations with acid for the purpose of increasing production.Acid Concentration: 10 %Add HCl to Water with percentage 1 m^3 HCl : 2 m^3 water.Pump this soln. in the well against the Filters.Then still (24 hours) for complete reaction between HCl and Lime Stone FM.Applications/Functions:Open fractures in limestone formations.Helps reduce development time.Helps increase well yield and capacity.

acid fracture v: to part or open fractures in limestone formations by using fluid under hydraulic pressure.

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Development Procedures: 2nd Step Compressor Development:Run In Hole Compressor Pipe String to certain depth then turn on compressor for certain duration as (1 hr.) then turn off compressor for ( hr.) and repeat this step for several times until water be clear then reach to another depths and repeat the previous steps for each depths.Note the pressure of Compressor as (20/18) bar; 20 mean the reading of compressor pressure on Starting Compressor, while 18 mean the reading of compressor pressure after constancy.Note that: when the different between the two readings small the well will be have a small Draw Down because the good recharge. Applications/Functions:(A typical method for well development) to surge or jet air in and out of the well screen openings, This procedure may take several days or perhaps longer, depending on the size and depth of the well.

Development Procedures: 3rd Step Pump Development:Run In Hole Electrical or mechanical submersible pump, Then Starting Development by starting with small discharge then stop for several times until water be clear then progressively increasing the flow rate (Q) in intervals until reach the maximum discharge and reach clear water in each discharge.Applications/Functions:Clear water from residual mud and fine sand progressively.Increase well yield and capacity.

Pumping Test Unit This Unit composed of the following:Generator.Electrical or mechanical submersible pump.Solar Tank.Pipe size 4 , 5 , 7 .Check Valve Non Return Valve.Measuring Discharge Tool with its components. Water level Measurement Tool: water level rope (Deep Meter Sounder) and sounding tube.Level Logger Diver (if available).

Discharge Measurement Tools Manometer (Orifice Pipe) and Orifice Table.Flow Meter (Normal Digital) and stop watch.Ultrasonic Flow Meter (Digital).A Five Gallon Bucket (20 liters) and a stop watch can be used to estimate low pumping rates.Oil Barrel and stop watch.

Orifice with its components Elbow Gate Valve Pipe Orifice Ring

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Water Level Measurement Tools

Manual Measurement: Using Water Level Probe (Deep Meter) and Sounding Tube.Automatic Measurement: Pressure Transducer (Diver) by recording water level and temperature.

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Water Level Probe (Deep Meter)

Pumping Test (Aquifer Test)Pumping test is about discharging water using an electrical or mechanical submersible pump, this test provides results that are more representative of aquifer characteristics including hydraulic conductivity, transmissivity, and specific capacity.There are three types of pumping tests:Step Draw Down Pumping Test.Long Duration (continuous) Pumping Test.Recovery Test.

Step Draw Down Pumping TestTo Provide certain parameters including the specific capacity, well loss and formation loss. The test shall be performed by progressively increasing the flow rate (Q) in intervals with measuring the drawdown along with time of each step.The pumping test data interpreted by using the Jacobi method by plotting specific drawdown (s/Q) versus flow rate (Q) to obtain well loss and formation loss parameters to calculate the specific capacity from the equation:s = B Q + C Q2Where:s: drawdown at any flow rate (m).B: Formation loss (hr/m2)C: Well loss (hr2/m5)Q: Flow rate (m3/hr)

Long Duration Pumping Test & Recovery TestAnother type of pumping test is long duration or continuous test where the flow rate is constant and test time from 12 to 24 hours.This test is followed by recovery test that measures the restoration of the static water level inside the well. Purpose of Both of these tests provide a full data to calculate aquifers Transmissivity (T).

The ability of the aquifer to transmit groundwater throughout its entire saturated thickness. Transmissivity is measured as the rate at which groundwater can flow through an aquifer section of unit width under a unit hydraulic gradient. Transmissivity can be determined from a pumping test using the time-drawdown data. T=b*K

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Pumping Phase & Recovery PhaseThis Graph showing the different phases of constant rate pumping test the pumping phase and the recovery phase.

Minimum Intervals for water level measurements for pumping testes

Recommended Minimum Intervals for water level measurements for pumping testes72

Pumping Tests Report Sheet

Development Report R.I.H.E.S Pump: simply stands for Run In Hole Electric Submersible Pump.Starting Development: S.W.L= ???m, Q=150m/h D.D= ???mQ=200m/h D.D= ???m Q=270m/h D.D= ???m

Continuous Development: S.W.L= ???m, Q=270m/h D.D= ???m

P.O.O.H.E.S Pump: simply stands for Pull Out Of Hole Electric Submersible Pump. Moving to New Well Site: ????

Step Draw Down Test ReportStep Draw Down Test:S.W.L= ???mQ=150m/h D.D= ???mQ=200m/h D.D= ???mQ=270m/h D.D= ???mLong Duration Pumping Test:S.W.L= ???mDuration= 24 HoursQ=270m/h D.D= ???mRecovery Test: Collect Recovery Data S.W.L reach to the original Level after ??? Hours.

Best RegardsMohamed M Elshora

Mud Engineer @ National Egyption Drilling and Petroleum Services Co. (DASCO)Phone (+2)01024817020Email : geomohamedelshora@yahoo.com