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Resin-rubber composite special-shaped body

A technology of resin rubber and special-shaped body, which is applied in drilling composition, earthwork drilling, wellbore/well components, etc., can solve the problems of bridging particles, such as insufficient temperature resistance, insufficient compression resistance, and low leakage plugging success rate. , to achieve the effect of improving the success rate of leak plugging, not easy to flow back, strong resistance to temperature and pressure

Inactive Publication Date: 2021-08-31
任丘市北方物资有限公司
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AI Technical Summary

Problems solved by technology

[0002] Resin-rubber composite profile is an auxiliary device for oil drilling plugging, which has been widely used in the field of oil drilling plugging; the existing resin-rubber composite profile is found in use, and the bridging plugging agent currently used is mainly Derived from agricultural and sideline product leftovers and natural minerals, the main bridging particles have the disadvantages of insufficient temperature and pressure resistance, especially in high-pressure wells, ultra-deep wells and leaking wells in the same layer. Due to the technical shortcomings of plugging materials and to improve the success rate of bridging plugging, major scientific research institutes and specialized companies are devoting themselves to the research and development of high-strength, high-temperature-resistant bridging plugging materials, and high-strength flaky Leite plugging materials have gradually appeared. Leakage agent, metal aluminum particles and other new plugging materials

Method used

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  • Resin-rubber composite special-shaped body
  • Resin-rubber composite special-shaped body

Examples

Experimental program
Comparison scheme
Effect test

Embodiment example 1

[0041] Weigh 600g of resin molding agent (thermosetting phenolic resin: thermoplastic phenolic resin: polypropylene = 5:1:1) + hexamethylenetetramine 10g + 1-5mm glass fiber 60g + density regulator 100g (limestone powder: aluminum powder =8:2)+50g of polypropylene grafted with maleic anhydride, and mix it evenly, add it into the kneader, heat the equipment to 180-200°C for kneading, start the extrusion equipment and start pouring into the mold (side length 5mm triangular cone) for extrusion injection, after the mold is cooled, take out the plugging particle product from the mold; by adjusting the amount of density regulator to prepare plugging particles with different densities, it can ensure that the plugging particles have different densities in drilling fluids All have good suspension stability.

[0042] Resin-rubber compound special-shaped property evaluation method of the present invention:

[0043] (1) Evaluation of compression resistance: Weigh 200g of plugging particl...

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Abstract

The invention relates to the technical field of petroleum drilling leakage stoppage, in particular to a resin-rubber composite special-shaped body. With high-temperature-resistant and high-strength resin and alloy are adopted as raw materials, triangular pyramid, cone and rhombuses bridging particles with taper angles and different sizes are prepared through high-temperature mixing and squeezing. The bridging particles have obvious taper angles, are easy to enter a stratum crack, are not easy to flow back, have extremely high temperature resistance and pressure resistance, and can be used as a primary bridging material with excellent performance, so that the leakage stoppage success rate of a malignant leakage well is increased. The resin-rubber composite special-shaped body is prepared from the following raw materials: a resin molding agent, a resin solidification accelerator, a strength enhancer, a density regulator and a compatibilizer.

Description

technical field [0001] The invention relates to the technical field of oil drilling plugging, in particular to a resin-rubber composite irregular body. Background technique [0002] Resin-rubber composite profile is an auxiliary device for oil drilling plugging, which has been widely used in the field of oil drilling plugging; the existing resin-rubber composite profile is found in use, and the bridging plugging agent currently used is mainly Derived from agricultural and sideline product leftovers and natural minerals, the main bridging particles have the disadvantages of insufficient temperature and pressure resistance, especially in high-pressure wells, ultra-deep wells and wells with leakage in the same layer. Due to the technical shortcomings of plugging materials and to improve the success rate of bridging plugging, major scientific research institutes and specialized companies are devoting themselves to the research and development of high-strength, high-temperature-r...

Claims

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Application Information

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IPC IPC(8): C08L61/06C08L23/12C08L51/06C08K7/14C08K3/08C08K3/26C08K13/04C09K8/42E21B33/13
CPCC08K2003/0812C08K2003/265C08L23/12C08L61/06C08L2201/08C08L2205/025C08L2205/035C09K8/426C09K2208/18E21B33/13C08L51/06C08K7/14C08K3/08C08K3/26C08K13/04
Inventor 李福书
Owner 任丘市北方物资有限公司
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