Composition for making a drilling fluid a non-invasive drilling fluid

A non-invasive, drilling fluid technology, applied in the field of the composition used to make the drilling fluid a non-invasive drilling fluid, which can solve the problems of pressure transmission and fluid loss, not having the strength of the sealing hole throat, etc.

Pending Publication Date: 2021-10-29
欧洲穆德股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In many cases, prior art NIFs do not have the strength to seal pore throats and / or fractures under such high pressure conditions, resulting in pressure transfer and fluid loss

Method used

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  • Composition for making a drilling fluid a non-invasive drilling fluid
  • Composition for making a drilling fluid a non-invasive drilling fluid
  • Composition for making a drilling fluid a non-invasive drilling fluid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0072] Example 1: Addition of non-invasive drilling fluid Composition 1 to a water-based fluid wherein the following components were ground, dried and sieved:

[0073] Almond shell powder (100 mesh): 75% (component 1)

[0074] Capers seed powder (100 mesh): 25% (component 2)

Embodiment 2

[0075] Example 2: Addition of non-invasive drilling fluid Composition 2 to a water-based fluid wherein the following components were ground, dried and sieved:

[0076] Almond shell powder (100 mesh): 75% (component 1)

[0077] Capers seed powder (100 mesh): 5% (component 2)

[0078] ·Coffee shell (120 mesh): 20% (component 3)

Embodiment 3

[0079] Example 3: Addition of non-invasive drilling fluid Composition 3 to a water-based fluid wherein the following components were ground, dried and sieved:

[0080] Almond shell powder (100 mesh): 90% (component 1)

[0081] Sour bean powder (100 mesh): 10% (component 2)

[0082] Table 1: Important properties of the drilling fluids of Examples 1 to 3. BHR is before hot rolling, AHR is after hot rolling.

[0083]

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Abstract

The invention relates to a composition for making a drilling fluid a non-invasive drilling fluid, the composition comprising: a first component comprising particles having a scratch hardness above 2 Mohs; and a second component comprising particles selected from the group of frag-mented seeds of Tamarindus indica, comminuted bark from Litsea glutinosa, or comminuted Ocimum tenuiflorum. The invention further relates to a non-invasive drilling fluid comprising the composition, and a method for drilling a wellbore.

Description

technical field [0001] The present invention relates to a composition for rendering a drilling fluid a non-invasive drilling fluid, a non-invasive drilling fluid comprising the composition, and a method for drilling a well. Background technique [0002] Drilling fluids (or "muds") used in the drilling of subterranean oil and gas wells, geothermal wells, mining and other drilling applications are well known. Drilling fluid carries cuttings and other particles beneath the bit, transports them through the annulus, and allows them to separate at the surface while cooling and cleaning the rotating bit. Drilling fluids are also designed to reduce friction between the drill string and the sides of the borehole while maintaining stability in the uncased portion of the borehole. Drilling fluids are formulated to prevent the undesired influx of formation fluids from permeable permeable rock. Drilling fluids are also used to collect and interpret information available from cuttings, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/02
CPCC09K8/03C09K2208/04C09K2208/18C09K8/514C09K8/516C09K8/035C09K8/02C09K8/10
Inventor 简·克里斯蒂安·瓦斯胡斯卡尔·罗尼·克隆特维德斯瓦潘·库马尔·曼达尔
Owner 欧洲穆德股份有限公司
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