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Slurry used for easily collapsed layer drilling

A mud and formula technology, applied in drilling compositions, chemical instruments and methods, etc., can solve the problems of well wall collapse, affecting drilling speed and efficiency, and easy to collapse layers, etc. The effect of the leaking wall effect

Inactive Publication Date: 2016-01-27
成都棕通石油配件有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the process of oil drilling, easily collapsible layers are often encountered, causing the well wall to collapse, which seriously affects the drilling speed and efficiency, and hinders the progress of the oilfield exploration and development work

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] A kind of mud used for drilling in easily collapsible layers, the formula is: 15 parts of bentonite; 0.05 parts of potassium polyacrylate; 10.1 parts of flow regulator 80A5; 5 parts of lignite resin; 1 part of sulfonated lignite 0.5 parts of hydroxyethyl cellulose; 0.2 parts of glycerol polyether; 1 part of basic zinc carbonate; 0.6 parts of sulfonated tall oil; 3 parts of barium sulfate; 1000 parts of water.

Embodiment 2

[0014] A kind of mud used for drilling into easily collapsible layers, the formula is: 30 parts of bentonite; 0.03 parts of potassium polyacrylate; 10.2 parts of flow pattern regulator 80A5; 3 parts of lignite resin; 3 parts of sulfonated lignite 0.2 part of hydroxyethyl cellulose; 0.5 part of glycerol polyether; 0.6 part of basic zinc carbonate; 1 part of sulfonated tall oil; 0.1 part of barium sulfate; 1000 parts of water.

Embodiment 3

[0016] A kind of mud used for drilling into easily collapsible layers, the formula is: 20 parts of bentonite; 0.04 parts of potassium polyacrylate; 10.15 parts of flow pattern regulator 80A5; 4 parts of lignite resin; 2 parts of sulfonated lignite 0.3 parts of hydroxyethyl cellulose; 0.4 parts of glycerol polyether; 0.8 parts of basic zinc carbonate; 0.7 parts of sulfonated tall oil; 1 part of barium sulfate; 1000 parts of water.

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Abstract

The invention provides a slurry used for easily collapsed layer drilling in oil drilling and production, and belongs to the field of oil drilling engineering. The slurry is used for solving problems that in oil drilling process, well wall collapse is caused by easily collapsed layers, drilling speed and benefit are influenced seriously, and oilfield exploration and development progress is influenced. The slurry is prepared from, by weight, 15 to 30 parts of bentonite, 0.03 to 0.05 part of potassium polyacrylate, 0.1 to 0.2 part of drilling fluid flow pattern regulator 80A51, 3 to 5 parts of walchowite, 1 to 3 parts of sulfonated lignite, 0.2 to 0.5 part of hydroxyethyl cellulose, 0.2 to 0.5 part of glyceryl polyether, 0.6 to 1 part of basic zinc carbonate, 0.6 to 1 part of sulfonated tall oil, 0.1 to 3 parts of barium sulfate, and 1000 parts of water. The slurry possesses excellent leakproof wall-protection effects on easily collapsed layer drilling with high pressure coefficient, and is capable of increasing penetration rate appropriately on condition of collapse prevention.

Description

technical field [0001] The invention belongs to the field of oil field drilling engineering, and in particular relates to a mud used for drilling easily collapsible layers in oil drilling. Background technique [0002] exist geological work in, using drilling equipment A cylindrical hole with a small diameter and a large depth drilled underground, also known as a borehole. The diameter and depth of the well depends on the purpose of the well and the burial depth of the minerals. drilling for oil, natural gas as well as groundwater The drilling diameters are larger. The main functions are: ① Obtaining underground physical data, that is, taking cores, ore cores, cuttings , liquid sample, gaseous state Wait. ② as Geophysical Logging channel, access to various rock formations geophysical field data of. ③ Observation as an artificial channel groundwater Layer hydrogeological dynamics. ④Used for the combination of exploration and production to develop groundwa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/24
Inventor 祈琪吴兵顾中华
Owner 成都棕通石油配件有限公司
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