Organic salt weighting agent

An organic salt and weighting agent technology, applied in the field of drilling, can solve the problems of performance defects limiting the scope of application, etc., and achieve the effects of suppressing borehole wall cracks, protecting oil and gas layers, and improving temperature resistance

Pending Publication Date: 2021-05-07
KARAMAY CITY YIEN TECHN SERVICES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] After 30 years of development and improvement, although the application of halogen compound salts in drilling fluids

Method used

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  • Organic salt weighting agent
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Examples

Experimental program
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Example Embodiment

[0021]Example 1: An organic salt heavier comprising an organic salt, the molecular formula of the organic salt: Ar (COO)nMnAmong them, A is a hetero atom or a group with a heteroatom, and R is an organic carbon chain having a carbon number 1 to 6, and COO is an organic carboxylate, m is a metal cation or ammonium ion.

[0022]The organic salt heavier preparation of the present invention is a white powder, odorless, odorless, not volatile, stable when normal temperature, and its nature can remain a few years. The material is easy to absorbing, soluble in water, neutral or slightly alkalinity, slightly soluble in acetone and ethanol in aqueous solution.

[0023]The organic salt of the organic salt of the present invention is an organic carbon chain having a carbon number 1 to 6, and according to the C-C key energy of the organic compound (347 kJ / mol), C = C key energy (611 kJ / mol), and the C≡C key energy ( Chemical parameters such as 837kj / mol), C-O key energy (360kJ / mol) and C-H ke...

Example Embodiment

[0054]Example 2: The organic salt of the present invention has been widely used in Karami oilfield. It is in the East Kwan 1 well, Huo 002,003 well, Gaoquan 1 well, Jiu Yun 1 well, An 5 well, Ann 001 well, Taiwan 59 well, Taiwan 60, Mana 1, Mana 001, 1002, 1003 wells, Taiwan 62, 63 well drilling and test completion liquid, as a completion fluid in the Tarim Oilfield 1, 10 wells in Wild Cloud 2, which also in front of the southern edge of Xinjiang Oilfield and high-density complex well drilling and high-temperature high-pressure well test operation in the Sanda Oilfield, the drilling well of the Tariwood Oilfield exceeded 7000m Drilling operation and high temperature high pressure well test operation, production and verification, it is very suitable for complex well drilling operations in Tuha Oilfield.

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Abstract

The invention discloses an organic salt weighting agent which comprises an organic salt, the molecular formula of the organic salt is AR(COO)nMn, wherein A is a heteroatom or a group with a heteroatom, R is an organic carbon chain with a carbon number of 1-6, COO<-> is an organic carboxylate radical, and M is a metal cation or an ammonium ion. The organic salt weighting agent disclosed by the invention has the chemical molecular structure characteristics of formate, namely contains organic acid radicals such as COO <-> and cations such as low-valence alkali metal ions, shows relatively high density and relatively good temperature-resistant stability and inhibitive ability, can resist various types of pollution, and is beneficial to protecting an oil and gas reservoir. The drilling speed can be increased by using the drilling fluid, and production verifies that the drilling fluid is very suitable for drilling operation of complex wells in the Duha oil field.

Description

technical field [0001] The invention relates to the technical field of drilling, in particular to an organic salt weighting agent. Background technique [0002] After 30 years of development and improvement, although the application of halogen compound salts in drilling fluids and completion fluids has matured, the performance defects of this type of inorganic salts also limit their application range. In recent years, experimental studies and field tests have shown that organic salts represented by formic acid and alkali metals surpass inorganic halogen salts in almost all performance aspects. For example, organic salts can be formulated to produce harmless, high Density salt solution, organic compounds are environmentally degradable substances, the anti-oxidation properties of organic salts improve the resistance to high temperature degradation of viscosifiers and fluid loss control agents, organic salts also have good resistance to salt (sulfate and carbonate ) invasion a...

Claims

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Application Information

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IPC IPC(8): C09K8/035
CPCC09K8/035C09K2208/12
Inventor 逄凯迪火昌盛王勇刘艳萍
Owner KARAMAY CITY YIEN TECHN SERVICES
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