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Field evaluation device for drilling and completion fluid protection ability in high permeability oil and gas reservoirs

A technology for protection capability and oil and gas reservoirs, applied in measurement devices, instruments, scientific instruments, etc., can solve the problems of large devices, complicated operations, and difficult to use, and achieve the effect of simple operation, reliable principle, and solving evaluation problems.

Active Publication Date: 2018-01-12
SOUTHWEST PETROLEUM UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It overcomes the problems that the conventional drilling and completion fluid dynamic damage evaluation device is large, complicated to operate, and difficult to use in mines, and realizes timely, fast and accurate dynamic damage evaluation of drilling and completion fluids under mine conditions

Method used

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  • Field evaluation device for drilling and completion fluid protection ability in high permeability oil and gas reservoirs
  • Field evaluation device for drilling and completion fluid protection ability in high permeability oil and gas reservoirs

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Experimental program
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Effect test

Embodiment Construction

[0013] The present invention will be further described below according to the accompanying drawings.

[0014] see figure 1 and figure 2 , the drilling and completion fluid damage evaluation system is mainly composed of cylinder body, kettle body, plunger, motor, rotating blade, sealing sleeve, standard core, fluid inlet switch, high-pressure nitrogen cylinder, pressure reducing valve, connecting pipeline, rock sample steel base, It consists of a fluid outlet switch, a computer and a holder bracket. The sealing sleeve 5 equipped with a standard rock core 6 is located in the cylinder body 1. The sealing sleeve 5 is composed of a soft sealing material 17 and a thermoplastic sleeve 18. The lower part of the sealing sleeve 5 is connected to the The rock sample steel base 13 is closely connected, and the rock sample steel base 13 and the cylinder body 1 are connected by threads. There is a fluid space 11 between the cylinder body 1 and the sealing sleeve 5. The hole can transmit ...

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Abstract

The invention relates to a high-permeability oil and gas reservoir drilling and completion fluid protective capability mine field evaluating device in the oil and gas industry. The device mainly comprises a barrel, a plunger, a motor, a rotary blade, a sealing sleeve, a standard core, a pressure sensor, a fluid outlet and inlet switch, a high pressure nitrogen gas cylinder, a pressure reduction valve, a rock sample steel base, a connection pipeline, a computer and a clamping device base. In the drilling and completion fluid damage evaluation process, fluid pressure provides confining pressure for a rock sample, the drilling and completion fluid volume is a constant value, and the rock sample is prepared from target stratum outcrop. The rock sample of reservoir rock is damaged in a constant-pressure mode, and the rock sample gas log permeability damage degree is rapidly evaluated by monitoring the attenuation process of gas pressure in the barrel. The principle is reliable, operation is simple, and the gap of the high-permeability oil and gas reservoir drilling and completion fluid dynamic damage evaluating device for a mine field is filled. Drilling and completion fluid reservoir protective capacity evaluating device miniaturization is achieved, and conditions are provided for instant, timely and simple drilling and completion fluid protective capability evaluation of the mind field.

Description

technical field [0001] The invention relates to a field evaluation device for drilling and completion fluid protection ability of high permeability oil and gas reservoirs in the oil and gas industry. Drilling and completion fluid filter cake thickness, fluid loss and permeability damage degree are key parameters of drilling and completion fluid reservoir protection ability. It can timely, quickly and accurately evaluate the reservoir protection ability of the drilling and completion fluid system, and provide a reliable basis for the timely optimization of the drilling and completion fluid reservoir protection performance at the drilling site. The equipment belongs to the experimental equipment for oil and gas layer protection in the process of oil and gas exploration and development. Background technique [0002] With the global natural gas exploration and development, especially the successful exploration of a large number of offshore high-permeability oil and gas reservoi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N33/00
CPCG01N33/00
Inventor 游利军张杜杰康毅力田键王立民何赛
Owner SOUTHWEST PETROLEUM UNIV
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