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Petroleum drilling leaking stoppage working fluid

A technology of oil drilling and working fluid, applied in the field of oil drilling, can solve the problems of wasting plugging materials and drilling mud, costing money and time, and difficult to judge the size of cracks, etc., and achieve the effect of safe construction

Inactive Publication Date: 2018-07-27
CHINA NAT PETROLEUM CORP CHUANQING DRILLING ENG CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, it is difficult to judge the size of many formation fractures, which makes it difficult to determine the size and amount of plugging materials used for bridge plugging. Repeated tests are often required, which wastes a lot of plugging materials and drilling mud, which is costly and time-consuming

Method used

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  • Petroleum drilling leaking stoppage working fluid
  • Petroleum drilling leaking stoppage working fluid
  • Petroleum drilling leaking stoppage working fluid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] As the best embodiment of the present invention, the solvent, suspension stabilizer, emulsifier, release agent, water-swellable leakage plugging agent, and retarder are prepared in parts by weight, and the components and proportions in parts by weight are as follows: Down:

[0027] Solvent: Suspension stabilizer: Emulsifier: Release agent, water-swellable plugging agent, retarder=50:1.0:3:2:120:1.0.

[0028] The solvent is selected from one or more than two of the following solvents mixed in any proportion: 1) acetone, 2) diesel oil; 3) white oil.

[0029] The suspension stabilizer is organic soil.

[0030] The emulsifier is selected from the following one or more than two emulsifiers mixed in any proportion: 1) fatty acid amide; 2) low-molecular polyamide; 3) sodium dodecylbenzenesulfonate.

[0031] The release agent is selected from the following one or more than two release agents mixed in any proportion: 1) silicone; 2) polyvinyl alcohol; 3) cellulose acetate.

...

Embodiment 2

[0036] As another preferred embodiment of the present invention, solvents, suspension stabilizers, emulsifiers, release agents, water-swellable leakage plugging agents, and retarders are prepared in parts by weight, and the components and parts by weight are The ratio is as follows:

[0037] Solvent: Suspension stabilizer: Emulsifier: Release agent, water-swellable leakage plugging agent, retarder=30:0.8:3:2:100:0.8.

[0038] The solvent is selected from one or more than two of the following solvents mixed in any proportion: 1) acetone, 2) diesel oil; 3) white oil.

[0039] The suspension stabilizer is organic soil.

[0040] The emulsifier is selected from the following one or more than two emulsifiers mixed in any proportion: 1) fatty acid amide; 2) low-molecular polyamide; 3) sodium dodecylbenzenesulfonate.

[0041] The release agent is selected from the following one or more than two release agents mixed in any proportion: 1) silicone; 2) polyvinyl alcohol; 3) cellulose a...

Embodiment 3

[0046] As another preferred embodiment of the present invention, solvents, suspension stabilizers, emulsifiers, release agents, water-swellable leakage plugging agents, and retarders are prepared in parts by weight, and the components and parts by weight are The ratio is as follows:

[0047] Solvent: Suspension stabilizer: Emulsifier: Release agent, water-swellable plugging agent, retarder=45:0.9:3:2:110:0.9.

[0048] The solvent is selected from one or more than two of the following solvents mixed in any proportion: 1) acetone, 2) diesel oil; 3) white oil.

[0049] The suspension stabilizer is organic soil.

[0050] The emulsifier is selected from the following one or more than two emulsifiers mixed in any proportion: 1) fatty acid amide; 2) low-molecular polyamide; 3) sodium dodecylbenzenesulfonate.

[0051] The release agent is selected from one or more than two of the following release agents mixed in any proportion: 1) silicone; 2) polyvinyl alcohol; 3) cellulose acetat...

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Abstract

The invention discloses petroleum drilling leaking stoppage working fluid and relates to the technical field of petroleum drilling. The working fluid is prepared from solvent, suspension stabilizer, emulsifier, mould release agent, water-swelling leaking stoppage agent and retarder according to a weight portion of 30-50:0.6-1.2:3-4:2-3:100-150:0.5-1. The petroleum drilling leaking stoppage workingfluid is simple in formulation and low in cost and has controllable gelation time, extremely high expansion rate and water wrapping performance.

Description

technical field [0001] The invention relates to the technical field of petroleum drilling, specifically relates to a leak plugging working fluid which rapidly expands and solidifies after encountering water and forms an elastic colloidal solidified body, and is especially suitable for fractures and karst caves in Sichuan, especially in layers containing flowing water. Vicious leakage plugging problem. Background technique [0002] Fractures and karst caves are developed in the Sichuan area. When drilling in these formations, serious mud leakage often occurs, and some leakage layers themselves are aquifers, or are connected to adjacent groundwater layers. The groundwater is very active. , The amount of leakage is very large. For leak plugging under such flowing water conditions, the conventional water-based leak plugging slurry is easily eroded and destroyed by the flowing groundwater, so the expected effect is often not obtained. If cement slurry is easily eroded and dilut...

Claims

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Application Information

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IPC IPC(8): C09K8/42
CPCC09K8/426
Inventor 黎凌欧阳伟陈俊斌袁志平李巍吴正良
Owner CHINA NAT PETROLEUM CORP CHUANQING DRILLING ENG CO LTD