Temperature-resistant and salt-resistant flow regulating agent suitable for fractured-vuggy oil reservoir as well as preparation method and application of temperature-resistant and salt-resistant flow regulating agent

A temperature-resistant, salt-resistant, fracture-cavity technology, used in chemical instruments and methods, production fluids, earth-moving drilling, etc. Yield, intensity controllable effect

Active Publication Date: 2022-05-06
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention solves the poor performances of the existing medicament strength, oil-water selectivity, adhesion, etc., and establishes a processing method for dosing

Method used

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  • Temperature-resistant and salt-resistant flow regulating agent suitable for fractured-vuggy oil reservoir as well as preparation method and application of temperature-resistant and salt-resistant flow regulating agent
  • Temperature-resistant and salt-resistant flow regulating agent suitable for fractured-vuggy oil reservoir as well as preparation method and application of temperature-resistant and salt-resistant flow regulating agent
  • Temperature-resistant and salt-resistant flow regulating agent suitable for fractured-vuggy oil reservoir as well as preparation method and application of temperature-resistant and salt-resistant flow regulating agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] The composition of the temperature-resistant and salt-resistant "four controllable" flow regulator systems suitable for fracture-vug reservoirs of the present embodiment is: 55 parts (weight) of thermoplastic resins, 18 parts of strength regulators, 24 parts of inorganic salts, white oil 3 copies.

[0061] The temperature-resistant and salt-resistant performance of the flow regulating agent of the present invention means that it can be within 150°C, and the salinity is 22×10 4 mg / l environment, placing it in a constant temperature box for half a year will not affect its performance and selective sealing effect.

[0062] First, stir all the medicines in the mixing equipment at a temperature of 30 degrees for 10 minutes, and set the temperature of the extruder to: 170°C, 220°C, 220°C, 220°C, 220°C, 210°C, 200°C, 190°C ℃, 190℃, 180℃, 180℃, 170℃ for preheating. Then start the main engine, the rotating speed is adjusted to 355rpm, the feeding speed is 33rpm, the traction s...

Embodiment 2-4

[0064] The compositions of the "four controllable" flow regulator particles of Examples 2-4 are shown in Table 1. The preparation method of the "four controllable" flow regulator particles in Examples 2 and 4 is the same as that in Example 1.

[0065] The product of the present invention is simulated formation temperature 130 ℃, salinity 20 * 10 4 mg / L reservoir conditions, the main performance parameters of the "four controllable" flow regulator particles of each embodiment are shown in Table 2.

[0066] The content of each component of "four controllable" flow regulator particles in the embodiment 2-4 of table 1 (unit: parts by weight)

[0067] components Example 2 Example 3 Example 4 thermoplastic resin 45 48 52 strength modifier 10 14 16 Inorganic salt 20 24 25 white oil 5 4 3

[0068] The main performance parameters of the "four controllable" flow regulator particles of table 2 embodiment 1-4

[0069] Examp...

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Abstract

The invention discloses a temperature-resistant and salt-resistant flow regulating agent suitable for a fracture-vug type oil reservoir as well as a preparation method and application thereof, and belongs to the technical field of oil-gas field development. The temperature-resistant and salt-resistant flow regulating agent suitable for the fractured-vuggy reservoir comprises thermoplastic resin, a strength regulator, inorganic salt and white oil. The mixing plasticizing modification device is adopted for processing, adjustment of the particle size, oil-water selectivity, particle strength and particle density can be achieved, the requirement for fixed-point placement of the adjusting deep part of the fracture-cavity type oil reservoir water drive flow channel can be met, selective plugging is achieved, and therefore the recovery efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of oil and gas field development, and in particular relates to a temperature-resistant and salt-resistant flow regulating agent suitable for fracture-cavity oil reservoirs, a preparation method and application thereof. Background technique [0002] Due to the complexity of fracture-vuggy reservoirs, water injection in carbonate reservoirs has "low production, low sweep, and low efficiency". The multi-well unit reserves are 810 million tons, and the degree of water driving is only 27%; the ratio of effective wells / injection wells The low is only 1.2, and 25 water channels have been achieved in the 97 well group; the water consumption per ton of oil has always been high, reaching 8.9 cubic meters per ton in 2017, which seriously affects efficient development. [0003] Many theories and practices for controlling water channeling in clastic rock reservoirs are not applicable, and there are few researches on enha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/588C09K8/508C09K8/44C09K8/42E21B43/22
CPCC09K8/588C09K8/5083C09K8/44C09K8/426C09K8/882E21B43/16C09K2208/18
Inventor 赵海洋何龙胡文革李子甲焦保雷钱真任波田亮杨祖国何晓庆柏森巫光胜王建海黄明良陈启龙
Owner CHINA PETROLEUM & CHEM CORP
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