CN202339307U - Device for determining water adsorption and diffusion coefficient of mud shale - Google Patents

Device for determining water adsorption and diffusion coefficient of mud shale Download PDF

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Publication number
CN202339307U
CN202339307U CN201120430767XU CN201120430767U CN202339307U CN 202339307 U CN202339307 U CN 202339307U CN 201120430767X U CN201120430767X U CN 201120430767XU CN 201120430767 U CN201120430767 U CN 201120430767U CN 202339307 U CN202339307 U CN 202339307U
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China
Prior art keywords
pressure
core
full
autoclave
temperature
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CN201120430767XU
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Chinese (zh)
Inventor
吴学升
刘社明
黄占盈
赵巍
欧阳勇
巨满成
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中国石油天然气股份有限公司
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Abstract

The utility model discloses a device for determining a water absorption and diffusion coefficient of mud shale. The device is designed for guiding the drilling operation of an oil-gas field by simulating the underground temperature and pressure conditions and determining the water adsorption and diffusion coefficient of the mud shale. The device mainly comprises an axial pressure pressurizing device, a high-pressure and a high-pressure shale core clamping device, a confining pressure pressurizing device, a temperature raising and measuring device, a drilling fluid circulating device, a high-pressure autoclave device and a measuring and acquiring device. According to the device disclosed by the utility model, the influence from the temperature in a shaft and the confining pressure can be simulated; the water adsorption and diffusion coefficient of the mud shale is determined; the problem that the underground pressure and temperature of the mud shale cannot be considered by conventional experiments is solved; the base for reasonably determining a safe slurry density window of a mud shale stratum in situ is provided; and the reference for keeping the shaft wall stable in the drilling process is provided.

Description

Measure mud shale suction coefficient of diffusion device

Technical field

The utility model relates to a kind of mensuration mud shale suction coefficient of diffusion device, belongs to oil and geological drilling field of engineering technology.

Background technology

In drilling process,, broken mechanical balance, thermal equilibrium and the chemical equilibrium on original stratum because the brill of well leaves; Under the acting in conjunction of hydraulic gradients and chemical gradient; In the nearly borehole wall mud shale of water intrusion in the drilling fluid, make the imbibition of water sensitivity mud shale, cause well week extra-stress field; Seepage effect can cause the change of nearly borehole wall pore pressure.In addition, carry out heat interchange between stratum and the drilling fluid, borehole wall temperature variation can cause the additional warm allergic effect field of force.These variations have changed the effective stress distribution of well week, thereby cause mud shale stratum borehole well instability and drilling tool blocked portion, prolong drilling period, increase drilling cost.Therefore; The suction coefficient of diffusion that has only accurate mensuration mud shale just can be understood fully the hydratability and the degree of hydration of mud shale stratum, with the hole stability cycle of accurate calculating mud shale stratum; Confirm reasonable drilling fluidity ability, keep the borehole wall stability of mud shale stratum.

The dispersed method of state's inner evaluation shale is a landwaste recovery method; Be with dry shale sample; Make sample cross (4~10 order) sieve; In the jar of heating, add 350 milliliters of test(ing) liquids and 50 gram (4~10 order) rock samples, put into roller heating furnace rolling 16 hours (control temperature 150) to the jar of heating then.Pour out test(ing) liquid and rock sample, cross same mesh sieve cloth, dry and weighing sieve is gone up rock sample, the calculated mass recovery.Though this method can simulation well under temperature conditions, can't simulate axially and the situation of confined pressure, with actual conditions discrepancy is arranged.At present, the mensuration of mud shale suction coefficient of diffusion is normally carried out under normal pressure, does not consider the influence of well temperature and confined pressure, is not inconsistent with drilling well is actual.

Summary of the invention

The purpose of the utility model is to provide a kind of mensuration mud shale suction coefficient of diffusion device, temperature and pressure condition under its ability simulation well, and the suction coefficient of diffusion of mensuration mud shale instructs the oilfield drilling operation.

The concrete technology contents of the utility model is following:

Measure mud shale suction coefficient of diffusion device by axle pressure pressue device, HTHP core clamping device, confined pressure pressue device, add gentle temperature measuring equipment, DFCU, autoclave device and measurement and harvester connects to form:

The axial pressure device is connected to form by storage tank, axial compression pump and axial compression controller successively;

The HTHP core clamping device is made up of core holding unit, full-hole core, self-adhesion band, rubber gasket and fluororubber spacer sleeve; Core holding unit is made up of seaming chuck and push-down head; Seaming chuck is the solid disk of a diameter greater than full-hole core; Push-down head is that a diameter is greater than full-hole core and disk that central through hole is arranged; Rubber gasket is located between seaming chuck and the full-hole core, has the rubber gasket of center pit to be located between push-down head and the full-hole core;

The confined pressure pressue device is connected to form by confined pressure pump and constant-voltage controller;

Add gentle temperature measuring equipment and connected to form by temperature controller and temperature sensor, temperature sensor is located on the interior bottom end cover of autoclave;

DFCU is connected to form by drilling fluid temperature controller, drilling fluid tank, high pressure drilling liquid pump and drilling fluid constant-voltage controller successively;

The autoclave device is made up of autoclave, piston, inlet valve, fuel outlet valve, inlet and exhausr port; Autoclave is made up of upper and lower end cap and housing, and the upper end cover center pit is used to be provided with piston, and the bottom end cover center pit is an inlet, and exhausr port is located at housing top, and inlet valve is located at the housing middle part, and fuel outlet valve is located at lower housing portion;

Measurement and harvester are made up of axial compression tensimeter, confined pressure tensimeter, drilling liquid pressure table, data collecting card and data Output Display Unit.

The beneficial effect that the utility model is measured mud shale suction coefficient of diffusion device is that it can simulate the influence of well temperature and confined pressure; Measure the suction coefficient of diffusion of mud shale; Solve normal experiment and can't consider the problem of mud shale down-hole pressure and temperature; Confirm rationally that for the scene mud shale stratum safety mud density window provides foundation, reference is provided for keeping wellbore stability in the drilling process.

Description of drawings

Accompanying drawing is for measuring mud shale suction coefficient of diffusion apparatus structure synoptic diagram;

Embodiment

Embodiment:

Embodiment to the utility model further specifies with reference to accompanying drawing:

Measure mud shale suction coefficient of diffusion device by axle pressure pressue device, HTHP core clamping device, confined pressure pressue device, add gentle temperature measuring equipment, DFCU, autoclave device and measurement and harvester connects to form:

The axial pressure device is connected to form by storage tank 101, axial compression pump 102 and axial compression controller 103 successively, axial compression controller 103 accurately Control Shaft to loading velocity, pressure and time, for the HTHP core clamping device provides axial pressure;

The HTHP core clamping device is made up of core holding unit 201, full-hole core 202, self-adhesion band 203, rubber gasket 204, rubber gasket 205 and fluororubber spacer sleeve 206; Core holding unit 201 is made up of seaming chuck and push-down head; Seaming chuck is the solid disk of a diameter greater than full-hole core 202; Push-down head is that a diameter is greater than disk full-hole core 202, that central through hole is arranged; Rubber gasket 204 is located between seaming chuck and the full-hole core 202, has the rubber gasket 205 of center pit to be located between push-down head and the full-hole core 202, and full-hole core 202 outsides are provided with self-adhesion band 203;

The confined pressure pressue device is connected to form by confined pressure pump 301 and constant-voltage controller 302, and the confined pressure pressue device is through the high-voltage oil liquid that confined pressure pump 301 pumps, and provides full-hole core 202 required confined pressure, and constant-voltage controller 302 will keep confined pressure invariable;

Adding gentle temperature measuring equipment is connected to form by temperature controller 401 and temperature sensor 402; Temperature sensor 402 is located on the autoclave 601 interior bottom end covers; Temperature controller 401 adopts the magnetic field induction vortex principle; Fluid around the full-hole core 202 is heated to the down-hole formation temperature, and keeps oil liquid temperature invariable; Temperature sensor 402 is given temperature controller 401 with the oil liquid temperature real-time Transmission, so that monitoring fluid in fact the time;

DFCU is connected to form by drilling fluid temperature controller 503, drilling fluid tank 501, high pressure drilling liquid pump 502 and drilling fluid constant-voltage controller 504 successively, and high pressure drilling liquid pump 502 provides confined pressure through the pressurization drilling fluid to full-hole core 202; Drilling fluid temperature controller 503 adopts the magnetic field induction vortex principle, and drilling fluid is heated to the down-hole formation temperature, and keeps oil liquid temperature invariable; Drilling fluid constant-voltage controller 504 keeps invariable with the pressure of drilling fluid pump 502 outputs;

The autoclave device is made up of autoclave 601, piston 602, inlet valve 603, fuel outlet valve 604, inlet 605 and exhausr port 606; Autoclave 601 is made up of upper and lower end cap and housing; The upper end cover center pit is used to be provided with piston 602, and the bottom end cover center pit is an inlet 605; Exhausr port 606 is located at the housing top, and inlet valve 603 is located at the housing middle part, and fuel outlet valve 604 is located at lower housing portion;

Measurement and harvester are made up of axial compression tensimeter 701, confined pressure tensimeter 702, drilling liquid pressure table 703, data collecting card 704 and data Output Display Unit 705, carry out the collection and the preservation of temperature and pressure data.

The test method of measuring mud shale suction coefficient of diffusion is following:

1) according to shown in Figure 1, coupling shaft to compression system, HTHP rock core grasping system, confined pressure compression system, add gentle temp measuring system, drilling fluid circulating system, autoclave system, measurement and acquisition system, check each parts and pipeline sealing.

2) before test, at first measure the initial moisture content of full-hole core 202, as shown in table 1 belowly be certain oilwell drilling core full-hole core parameter and initial moisture content table after the processing:

Table 1

3) then with fluororubber spacer sleeve 206 encapsulation full-hole cores 202; Then; With the seaming chuck sealing of self-adhesion band 203, with the push-down head sealing of full-hole core 202, rubber gasket 205 and core holding unit 201 with full-hole core 202, rubber gasket 204 and core holding unit 201.

4) open autoclave 601, the core holding unit 201 of clamping full-hole core 202 is put into autoclave 601, close autoclave 601, the inspection sealing.

5) start axial compression pump 102, through axial compression control device 103 axial pressure to 5MPa; Adopt confined pressure pump 301 to add confined pressure to 10MPa for core holding unit 201; Opening temperature controller 401 is heated to 90 ℃ for autoclave 601.

6) adopt drilling fluid temperature controller 503 that drilling fluid is heated to 90 ℃; Open high pressure drilling liquid pump 502 and make the drilling fluid in the drilling fluid tank 501 arrive full-hole core 202 end faces, drilling fluid temperature and pressure are stabilized in 90 ℃ and 10MPa respectively through drilling fluid constant voltage control device 504.

7) start measurement and acquisition system, write down the pressure and temperature data of fluid and drilling fluid automatically, in experimentation, rely on measurement and acquisition system to make above-mentioned experiments value keep constant.

8) experiment was carried out discharge degree after 5 days, took out full-hole core 202 rapidly, in axial direction pressed the certain distance sampling, measured the water cut of full-hole core 202 with the oven dry weight method.

After making an experiment with said method, table 2 is these full-hole core 202 suction diffusion experiments tables as a result:

Table 2

Claims (1)

1. measure mud shale suction coefficient of diffusion device for one kind; By axle pressure pressue device, HTHP core clamping device, confined pressure pressue device, add gentle temperature measuring equipment, DFCU, autoclave device and measurement and harvester connects to form, it is characterized in that:
The axial pressure device is connected to form by storage tank (101), axial compression pump (102) and axial compression controller (103) successively;
The HTHP core clamping device is made up of core holding unit (201), full-hole core (202), self-adhesion band (203), rubber gasket (204), rubber gasket (205) and fluororubber spacer sleeve (206); Core holding unit (201) is made up of seaming chuck and push-down head; Seaming chuck is the solid disk of a diameter greater than full-hole core (202); Push-down head be a diameter greater than disk full-hole core (202), that central through hole is arranged, rubber gasket (204) is located between seaming chuck and the full-hole core (202), has the rubber gasket (205) of center pit to be located between push-down head and the full-hole core (202);
The confined pressure pressue device is connected to form by confined pressure pump (301) and constant-voltage controller (302);
Add gentle temperature measuring equipment and connected to form by temperature controller (401) and temperature sensor (402), temperature sensor (402) is located on the interior bottom end cover of autoclave (601);
DFCU is connected to form by drilling fluid temperature controller (503), drilling fluid tank (501), high pressure drilling liquid pump (502) and drilling fluid constant-voltage controller (504) successively;
The autoclave device is made up of autoclave (601), piston (602), inlet valve (603), fuel outlet valve (604), inlet (605) and exhausr port (606); Autoclave (601) is made up of upper and lower end cap and housing; The upper end cover center pit is used to be provided with piston (602), and the bottom end cover center pit is inlet (605); Exhausr port (606) is located at the housing top, and inlet valve (603) is located at the housing middle part, and fuel outlet valve (604) is located at lower housing portion;
Measurement and harvester are made up of axial compression tensimeter (701), confined pressure tensimeter (702), drilling liquid pressure table (703), data collecting card (704) and data Output Display Unit (705).
CN201120430767XU 2011-11-03 2011-11-03 Device for determining water adsorption and diffusion coefficient of mud shale CN202339307U (en)

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Application Number Priority Date Filing Date Title
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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103233725A (en) * 2013-04-17 2013-08-07 西南石油大学 Device and method for determining high temperature and high pressure full diameter core mud pollution evaluation
CN103267804A (en) * 2013-04-25 2013-08-28 中国石油天然气集团公司 Reservoir rock low-frequency rock physical modulus measurement system
CN103592205A (en) * 2013-11-20 2014-02-19 中国石油大学(华东) Device and method for testing diffusion coefficient of chemical potential in mudstone
CN103837598A (en) * 2014-03-20 2014-06-04 西南石油大学 Underground shale water absorption leading-edge testing device
CN104077950A (en) * 2014-07-18 2014-10-01 中国地质大学(武汉) Dense rock mass water-rock dynamic reaction teaching experimental device and method
CN104819897A (en) * 2015-04-28 2015-08-05 中山大学 Solution-injection circulating system under high-pressure environment
CN104849172A (en) * 2014-02-18 2015-08-19 中国石油化工股份有限公司 Oil shale oil content test experiment apparatus and test method thereof
CN105547958A (en) * 2015-12-21 2016-05-04 中国石油大学(北京) Spontaneous infiltration absorption measurement method used for shale
CN106680106A (en) * 2017-01-06 2017-05-17 中国石油大学(华东) Simulation experiment device and method for mudstone and drilling liquid interaction under stratum conditions

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103233725A (en) * 2013-04-17 2013-08-07 西南石油大学 Device and method for determining high temperature and high pressure full diameter core mud pollution evaluation
CN103233725B (en) * 2013-04-17 2015-07-01 西南石油大学 Device and method for determining high temperature and high pressure full diameter core mud pollution evaluation
CN103267804A (en) * 2013-04-25 2013-08-28 中国石油天然气集团公司 Reservoir rock low-frequency rock physical modulus measurement system
CN103267804B (en) * 2013-04-25 2016-02-03 中国石油天然气集团公司 A kind of reservoir rock low-frequency rock physical modulus measuring system
CN103592205A (en) * 2013-11-20 2014-02-19 中国石油大学(华东) Device and method for testing diffusion coefficient of chemical potential in mudstone
CN103592205B (en) * 2013-11-20 2014-09-17 中国石油大学(华东) Device and method for testing diffusion coefficient of chemical potential in mudstone
CN104849172B (en) * 2014-02-18 2017-08-04 中国石油化工股份有限公司 Oil content of oil shale experimental apparatus for testing and its method of testing
CN104849172A (en) * 2014-02-18 2015-08-19 中国石油化工股份有限公司 Oil shale oil content test experiment apparatus and test method thereof
CN103837598B (en) * 2014-03-20 2016-05-18 西南石油大学 Mud shale water suction forward position, a kind of down-hole testing arrangement
CN103837598A (en) * 2014-03-20 2014-06-04 西南石油大学 Underground shale water absorption leading-edge testing device
CN104077950A (en) * 2014-07-18 2014-10-01 中国地质大学(武汉) Dense rock mass water-rock dynamic reaction teaching experimental device and method
CN104819897A (en) * 2015-04-28 2015-08-05 中山大学 Solution-injection circulating system under high-pressure environment
CN104819897B (en) * 2015-04-28 2018-03-30 中山大学 Solution injects the circulatory system under a kind of hyperbaric environment
CN105547958A (en) * 2015-12-21 2016-05-04 中国石油大学(北京) Spontaneous infiltration absorption measurement method used for shale
CN105547958B (en) * 2015-12-21 2018-08-21 中国石油大学(北京) A kind of spontaneous imbibition measurement method for shale
CN106680106A (en) * 2017-01-06 2017-05-17 中国石油大学(华东) Simulation experiment device and method for mudstone and drilling liquid interaction under stratum conditions
CN106680106B (en) * 2017-01-06 2019-04-30 中国石油大学(华东) Mud stone, drilling fluid interaction imitative experimental appliance and method under formation condition

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