Lipophilic rigid particle plugging agent and production method as well as using method thereof
A technology of rigid particles and loss-stopping agent, which is applied in chemical instruments and methods, drilling compositions and other directions, can solve the problems of affecting oil production of oil wells, incomplete recovery of oil layers, polluted oil layers, etc., and achieves low cost and simple production method. , good solubility
Active Publication Date: 2014-03-12
KARAMAY ZHENGCHENG
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AI Technical Summary
Problems solved by technology
[0002] The granular lost circulation agent currently in use is a composite closed leakage agent of hydrophilic rigid granules and fiber granules. The biggest disadvantage of this kind of lost circulation agent is pollution Oil layer, the oil layer cannot be fully recovered after drilling and completion, which affects the oil production of the oil well
Method used
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Experimental program
Comparison scheme
Effect test
Embodiment 1
[0012] Example 1, the lipophilic rigid particle plugging agent consists of: 0.1 to 10 parts of high pressure polyethylene, 1 to 15 parts of polyvinyl acetate, 0.3 to 18 parts of asphalt, 10 parts of 20 to 100 mesh marble to 25 parts, 20 to 60 parts of 60 to 425 mesh limestone, 2 to 15 parts of 10 to 40 mesh ceramsite, and 0.01 to 0.08 parts of chlorine dioxide.
Embodiment 2
[0013] Example 2, the lipophilic rigid particle plugging agent is composed of: 0.1 part of high pressure polyethylene, 1 part of polyvinyl acetate, 0.3 part of asphalt, 10 parts of 20 to 100 mesh marble, 20 parts of 60 to 425 mesh limestone, 10 to 40 mesh ceramsite 2 parts, chlorine dioxide 0.01 part.
Embodiment 3
[0014] Embodiment 3, the lipophilic rigid particle plugging agent is composed by weight: 10 parts of high pressure polyethylene, 15 parts of polyvinyl acetate, 18 parts of asphalt, 25 parts of 20 to 100 mesh marble, 60 parts of 60 to 425 mesh limestone, 15 parts of 10 to 40 mesh ceramsite, 0.08 parts of chlorine dioxide.
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Abstract
The invention relates to the technical field of a lipophilic rigid particle plugging agent for oil exploitation and discloses the lipophilic rigid particle plugging agent and a production method as well as using method thereof. The lipophilic rigid particle plugging agent is composed of high pressure polyethylene, polyvinyl acetate, asphalt, marble with 20-100 meshes, limestone with 60-425 meshes, ceramsite with 10-40 meshes and chlorine dioxide. The lipophilic rigid particle plugging agent is characterized in that the preparation and production method of the lipophilic rigid particle plugging agent is simple and low in cost and has high efficiency, the dissolution rate is 93%, the acid solubility is 85%, and the oil solution rate is 8%, and when the bearing pressure on cracks with crack widths of 2-3mm is 5-7MPa, the mud loss is less than 10% in the plugging process, and the lipophilic rigid particle plugging agent is well compatible with the mud and has no impact on the property of the mud. Particles with special shapes, soft exteriors and hard interiors can effectively plug the cracks.
Description
technical field [0001] The invention relates to the technical field of lipophilic rigid particle plugging agent for oil exploitation, and relates to a lipophilic rigid particle plugging agent and its production method and application method. Background technique [0002] The granular lost circulation agent currently used is a composite plugged agent of hydrophilic rigid granules and fiber granules. The biggest disadvantage of this kind of lost circulation agent is that it pollutes the oil layer, and the oil layer cannot be completely recovered after drilling and completion, which affects the oil recovery of the oil well. . Contents of the invention [0003] The invention provides a lipophilic rigid particle plugging agent and its production method and application method, which overcomes the deficiencies of the prior art and has strong adaptability, especially for use in fractured oil layers, which can improve the plugging effect, And it does not pollute the oil layer and ...
Claims
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IPC IPC(8): C09K8/42
Inventor 王国瑞
Owner KARAMAY ZHENGCHENG