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A leakage-stopping and anti-leakage material

A leakage prevention and polymer technology, which is applied in the field of oil and gas well drilling, can solve the problems of poor pressure bearing capacity, formation leakage and cementing, etc., and achieve the effects of strong pressure bearing capacity, improved pressure bearing capacity, and improved plugging efficiency

Active Publication Date: 2018-06-29
TIANJIN BO XING ENG SCI & TECH LIMITED COMPANY OF CNPC +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention solves the technical problem that the plugging and anti-leakage materials used in the cementing of oil and gas wells in the prior art have poor pressure bearing capacity and cannot satisfy the leakage and cementing of various types of formations by providing a plugging and anti-leakage material.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] In this embodiment, a leak-stopping and leak-proof material is provided, and the components included in the leak-stopping and leak-proof material and the weight ratio of the components are:

[0030] 100 parts of fiber, 20-40 parts of polymer microspheres, 15-30 parts of polymer powder, 10-30 parts of blast furnace slag;

[0031] Wherein, the polymer microspheres and the fibers are entangled with each other to improve the pressure bearing capacity of the leakage prevention material; the polymer powder is used to bond the polymer microspheres, the fibers and The blast furnace slag is used to improve the pressure bearing capacity of the leakage prevention material.

[0032] In the embodiment of the present application, the fibers are specifically:

[0033] A combination of one or more of polyethylene fibers, polypropylene fibers, polyvinyl alcohol fibers, polyester fibers, polyacrylonitrile fibers, nylon fibers and lignin fibers.

[0034] Preferably, the fibers are speci...

Embodiment 2

[0051] The components included in the plugging and anti-leakage material provided in this example and the weight ratio of the components are: 100 parts of polypropylene fiber, 40 parts of polymer microspheres, 15 parts of ethylene-vinyl acetate copolymer powder, super 30 parts of fine blast furnace slag.

[0052] The leak-stopping principle of the leak-stopping and leak-proof material in this embodiment is the same as that of the leak-stopping and leak-proof material in Embodiment 1, and for the sake of brevity of the description, it will not be repeated here.

Embodiment 3

[0054] The components included in the leak-stopping and leak-proof material provided in this example and the weight ratio of the components are: 100 parts of polypropylene fibers, 20 parts of polymer microspheres, 30 parts of ethylene-methyl acrylate copolymer powder, super 10 parts of fine blast furnace slag.

[0055] The leak-stopping principle of the leak-stopping and leak-proof material in this embodiment is the same as that of the leak-stopping and leak-proof material in Embodiment 1, and for the sake of brevity of the description, it will not be repeated here.

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Abstract

The invention discloses a leakage-stoppage and leakage-proof material. The leakage-stoppage and leakage-proof material comprises, by weight, 100 parts of fibers, 20-40 parts of polymeric microspheres, 15-30 parts of polymeric powder and 10-30 parts of blast furnace slags. The polymeric microspheres and the fibers are mutually intertwined to improve the pressure-bearing capacity of the leakage-stoppage and leakage-proof material; the polymeric powder is used for bonding the polymeric microspheres, the fibers and the blast furnace slags to improve the pressure-bearing capacity of the leakage-stoppage and leakage-proof material. The leakage-stoppage and leakage-proof material is used for solving the technical problems that for a leakage-stoppage and leakage-proof material in the prior art, the pressure-bearing capacity is poor, and the requirements of various types of formation leakage well cementing cannot be met. The leakage-stoppage and leakage-proof material which is strong in pressure-bearing capacity and can meet the requirements of the various types of the formation leakage well cementing is provided.

Description

technical field [0001] The invention relates to the technical field of oil and gas well drilling, in particular to a plugging and anti-leakage material. Background technique [0002] In the process of oil and gas drilling and completion, the leakage of drilling fluid, cement slurry or other working fluids into the formation is called lost circulation. The downhole complex situation caused by lost circulation and various downhole vicious accidents induced by it are extremely harmful to drilling and completion engineering, and have always been a matter of great concern to domestic and foreign petroleum engineering circles. However, due to the complex causes and many restrictive factors of lost circulation, it has become a major technical problem that has not been completely solved in drilling and completion projects at home and abroad. Lost circulation in cementing may cause consequences: (1) The return of cement is not high enough, and the formation cannot be sealed accordin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K8/467
CPCC09K8/467C09K2208/08
Inventor 赵宝辉邹建龙聂臻石凌龙谢飞燕杜政学刘爱萍夏元博李鹏晓
Owner TIANJIN BO XING ENG SCI & TECH LIMITED COMPANY OF CNPC
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