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Hydraulic fracturing method

A technology of hydraulic fracturing, fracturing fluid, applied in the field of hydraulic fracturing

Inactive Publication Date: 2006-02-01
SCHLUMBERGER TECH LTD BV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

High surface layers can also result from always achieving TSO

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[0032] In most cases, hydraulic fracturing consists in pumping a proppant-free viscous fluid or pad (usually water with some highly viscous fluid additive) faster than the fluid can leak completely into the formation Sent into the well, the pressure rises and the rock fractures, creating artificial fractures and / or extending existing fractures. In turn, a proppant such as sand is added to the fluid to form a slurry that will be pumped into the fracture to prevent the fracture from closing when the pumping pressure decreases. The proppant transport capability of the base fluid depends on the type of viscous additives added to the water base.

[0033] Water-based fracturing fluids, which have water-soluble polymers added to form a viscous solution, are widely used in fracturing techniques. Since the late 1950s, more than half of all fracking treatments have been performed with fluids such as guar gum, high molecular weight polysaccharides composed of mannose and galactose, or f...

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Abstract

The present invention relates to a method of designing a hydraulic fracturing treatment in a subterranean reservoir comprising the steps of: a) quantifying reservoir parameters including bottom hole temperature and formation permeability, b) estimating formation stress due to treatment fluid injection Temporary changes in temperature, and c) designing the fluid best suited to said temporary temperature.

Description

technical field [0001] The present invention relates generally to a technique for hydraulic fracturing in subterranean formations, and in particular to a technique for optimizing the conductivity of fractures, especially in highly permeable formations. Methods and Apparatus. Background technique [0002] Hydrocarbons (oil, natural gas, etc.) are obtained from subterranean geological formations (ie, "reservoirs") by drilling a well that penetrates a hydrocarbon-bearing formation. This method provides a localized flowpath for hydrocarbons to reach the surface. In order to "produce" hydrocarbons, ie, hydrocarbons from the formation into the wellbore (and eventually to the surface), there must be a sufficiently unobstructed flow path from the formation to the wellbore. [0003] Hydraulic fracturing is the primary means of increasing the productivity of a well by laying or extending the passage from the wellbore to the reservoir. This operation essentially works by hydraulical...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/26E21B43/267C09K8/68C09K8/80E21B41/00
CPCC09K8/685E21B43/26C09K8/68C09K8/80E21B43/27
Inventor 雨果·莫拉尔斯巴尔克里什纳·加迪亚
Owner SCHLUMBERGER TECH LTD BV
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