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Fracturing sand control method

A fracturing sand control and sand ratio technology, which is applied in the direction of earthwork drilling, wellbore/well components, production fluid, etc., can solve the problems of mud clogging and easy clogging, so as to facilitate discharge, avoid clogging and delay migration Effect

Pending Publication Date: 2022-05-13
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] Using the above-mentioned methods, there are silt fine sand and mud clogging phenomenon.
Aiming at the problem of easy clogging, it is necessary to provide a simple and effective anti-clogging method for fracturing and sand control

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A fracturing sand control method, comprising the following steps:

[0039] Step 1. According to the creation of long and thin fractures at the far end of the formation, initially use a small sand ratio and a large displacement, and the amount of sand-carrying fluid used accounts for 50-70wt% of the total sand-carrying fluid; create wide fractures at the near-end of the formation, using a high sand ratio, Small displacement, using the design principle that the amount of sand-carrying fluid accounted for 10-30wt% of the total sand-carrying fluid, using three-dimensional fracturing simulation software to optimize the construction parameters of double fracture fracturing and sand control, and optimize the best fracture shape and flow diversion Capable pumping program.

[0040] Step 2. Calculate fracture extension pressure and displacement through step displacement test results and software simulation; calculate fracture closure pressure and closure time, bottom hole constru...

Embodiment 2

[0058] A fracturing sand control method, comprising the following steps:

[0059] Step 1. According to the creation of long and thin fractures at the far end of the formation, initially use a small sand ratio and a large displacement, and the amount of sand-carrying fluid used accounts for 50-70wt% of the total sand-carrying fluid; create wide fractures at the near-end of the formation, using a high sand ratio, Small displacement, using the design principle that the amount of sand-carrying fluid accounted for 10-30wt% of the total sand-carrying fluid, using three-dimensional fracturing simulation software to optimize the construction parameters of double fracture fracturing and sand control, and optimize the best fracture shape and flow diversion Capable pumping program.

[0060] Step 2. Calculate fracture extension pressure and displacement through step displacement test results and software simulation; calculate fracture closure pressure and closure time, bottom hole constru...

Embodiment 3

[0078] A fracturing sand control method, comprising the following steps:

[0079] Step 1. According to the creation of long and thin fractures at the far end of the formation, initially use a small sand ratio and a large displacement, and the amount of sand-carrying fluid used accounts for 50-70wt% of the total sand-carrying fluid; create wide fractures at the near-end of the formation, using a high sand ratio, Small displacement, using the design principle that the amount of sand-carrying fluid accounted for 10-30wt% of the total sand-carrying fluid, using three-dimensional fracturing simulation software to optimize the construction parameters of double fracture fracturing and sand control, and optimize the best fracture shape and flow diversion Capable pumping program.

[0080] Step 2. Calculate fracture extension pressure and displacement through step displacement test results and software simulation; calculate fracture closure pressure and closure time, bottom hole constru...

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Abstract

The invention belongs to the technical field of petroleum engineering, and relates to a fracturing sand control method. By controlling construction parameters, the long and thin seam is manufactured at the far end of the stratum, the crack extends as much as possible, the purpose of deeply transforming the stratum is achieved, the short and wide seam is manufactured in the immediate vicinity of wellbore, migration of stratum sand is delayed, the flow conductivity of the immediate vicinity of wellbore is improved, meanwhile, consolidated precoated sand is adopted when the short and wide seam is manufactured, and the construction efficiency is improved. The backflow of the quartz sand and the precoated sand is further blocked, and the phenomenon that the near-wellbore area is easily blocked is overcome.

Description

technical field [0001] The invention belongs to the technical field of petroleum engineering and relates to a fracturing sand control method. Background technique [0002] Conventional fracturing sand control technology uses high sand ratio and large displacement to pump quartz sand to the formation, creating short and wide high-permeability fractures in the near-wellbore area, improving the seepage capacity in the near-wellbore area, which can delay the migration of sand and gravel in the formation and block the formation. Sand, for sand control. As the production of Shengli Oilfield enters the middle and later stages, the stratum structure becomes looser, and the low-permeability reservoirs also begin to produce sand, especially the low-permeability and high-shale sand. Fine sand and mud plugging are prone to occur in the well zone. [0003] Chinese invention patent CN107461182B discloses a layered fracturing sand control method, which includes the following steps: divid...

Claims

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Application Information

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IPC IPC(8): E21B43/26E21B43/267
CPCE21B43/26E21B43/267
Inventor 陈刚魏芳王勇王宗六武明鸣姜静贾维霞梁伟陈雪高雪峰魏庆彩
Owner CHINA PETROLEUM & CHEM CORP
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