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Pulsed hydraulic fracturing with geopolymer precursor fluids

A technology of geopolymers and body fluids, applied in the direction of drilling compositions, production fluids, wellbore/well components, etc., can solve the problems of loss of initial conductivity, gel damage, etc., to eliminate demand, increase productivity, cost reduction effect

Inactive Publication Date: 2020-05-05
SAUDI ARABIAN OIL CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In some cases, conventional proppant packs lose as much as 99% of their initial conductivity due to gel damage, fines migration, multiphase flow, and non-Darcy flow

Method used

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  • Pulsed hydraulic fracturing with geopolymer precursor fluids
  • Pulsed hydraulic fracturing with geopolymer precursor fluids
  • Pulsed hydraulic fracturing with geopolymer precursor fluids

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Embodiment Construction

[0018] To avoid loss of conductivity of the proppant pack in the reservoir, separate proppant columns are formed to support the fracture and keep it open. The separated proppant columns form conductive channels that provide paths of high conductivity for hydrocarbon flow. As described herein, a stable proppant column is produced by providing a pulse of geopolymer precursor fluid within a compatible fracturing fluid, or by combining a pulse of geopolymer precursor fluid with a compatible fracturing fluid at fracture pressure. Pulses of fracturing fluid alternate through the wellbore and into the reservoir. The geopolymer precursor fluid contains an aluminosilicate, an alkaline agent and a penetration enhancer. The pulsed injection mode causes the geopolymer precursor fluid to fill the fracture in a discrete distribution shape, creating proppant columns in the fracture. The geopolymer precursor fluid hardens in the reservoir to form geopolymer proppant columns in the fractures...

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Abstract

Fracturing a reservoir includes providing a pad fluid to the reservoir via a wellbore in a well to create fractures in the reservoir, providing a fracturing fluid to the fractures via the wellbore, providing a geopolymer precursor fluid to the fractures via the wellbore, shutting in the wellbore at a wellbore pressure, thereby allowing the geopolymer precursor fluid to harden and form geopolymer proppant pillars in the fractures. Providing the geopolymer precursor fluid to the fractures includes pulsing quantities of the geopolymer precursor fluid into a continuous flow of the fracturing fluidor alternately pulsing quantities of the geopolymer precursor fluid and the fracturing fluid. An elapsed time between pulsing the quantities of the geopolymer precursor fluid is between 2 seconds and20 minutes.

Description

[0001] priority claim [0002] This application claims priority to US Patent Application No. 15 / 711,889 filed September 21, 2017, the entire contents of which are hereby incorporated by reference. technical field [0003] The present invention relates to pulse hydraulic fracturing of a reservoir formation using a geopolymer precursor fluid to obtain isolated geopolymer proppant pillars in the reservoir formation. Background technique [0004] The success of a fracture stimulation treatment depends at least in part on the strength and distribution of the proppant used to prevent the resulting fractures from closing after the treatment. Even for the simple and common feature of high proppant placement efficiency across the fracture geometry, current mathematical and engineering concepts still overestimate the flow capacity of fractures by orders of magnitude. Proppant pack permeability can be reduced due to a combination of factors such as residual damage from poor gel recove...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/62C09K8/68C09K8/80
CPCC09K8/62C09K2208/08C09K2208/30C09K8/80C09K8/685Y02P40/10E21B43/267C09K8/665C09K8/70
Inventor 艾哈迈德·M·戈马哈立德·R·诺亚米盖桑·A·阿尔-穆塔塔舍里
Owner SAUDI ARABIAN OIL CO
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