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Method for separating formation lithology-fluid laser information of drilling fluid

A separation method and formation lithology technology, applied in the separation field of drilling fluid formation lithology-fluid laser information

Pending Publication Date: 2019-06-25
CHINA PETROCHEMICAL CORP +4
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the patent only analyzes the lithology and does not involve the information of the underlying fluid

Method used

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  • Method for separating formation lithology-fluid laser information of drilling fluid
  • Method for separating formation lithology-fluid laser information of drilling fluid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0086] 1. Detect the laser-induced breakdown spectrum information of the newly prepared drilling fluid.

[0087] 1.1 Use a container to collect 1L of newly prepared drilling fluid samples from the drilling mud tank;

[0088] 1.2 Pour the newly prepared drilling fluid sample into a beaker container with a volume of not less than 500ml;

[0089] 1.3 Place the laser probe of the drilling fluid geological information laser online detection equipment in the beaker containing the newly prepared drilling fluid sample, and the bottom of the laser probe is immersed in the sample for more than 10cm;

[0090] 1.4 Start the drilling fluid geological information laser online detection equipment, collect and record the laser-induced breakdown spectrum information of the newly prepared drilling fluid.

[0091] 2. Continuously detect laser-induced breakdown spectrum information of drilling fluid samples.

[0092] 2.1 Fix the laser probe of the drilling fluid geological information laser onl...

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Abstract

The invention provides a method for separating formation lithology-fluid laser information of drilling fluid. The drilling strata fluid mainly contains petroleum, natural gas and water and formation fluid formation elements mainly include C, H and O elements; on the basis of a laser-induced breakdown-spectrum combination relationship of the three elements of C, H and O, laser-induced breakdown spectrum characteristics of formation fluid are extracted from geological laser-induced breakdown spectrum information of the drilling strata; and differential calculation is carried out on the geological laser-induced breakdown spectrum information of the drilling strata and the laser-induced breakdown spectrum inforamtion of formation fluid and lithological laser-induced breakdown spectrum characteristic information of the drilling strata is separated to realize formation lithology-fluid laser information separation of the drilling fluid. With the information separation method, the formation lithology information and fluid information are separated in real time; the lithology of the drilling strata can be identified and the fluid properties of the formation can be evaluated quickly and accurately; the e oil and gas resources can be discovered timely; the occurrence of drilling construction accidents is prevented; and the benefit of exploration and development is increased.

Description

technical field [0001] The invention belongs to the technical field of petroleum and natural gas exploration and development, and in particular relates to a method for separating drilling fluid formation lithology-fluid laser information. Background technique [0002] In order to improve the benefits of exploration and development of oil and natural gas resources, it is necessary to timely and accurately identify the lithology of the formation encountered and evaluate the properties of the formation fluid at the drilling construction site. The traditional method is that oil logging personnel separate the cuttings in the formation encountered in the drilling fluid carried by the drilling outlet and the sample gas in the formation fluid, use gas chromatography logging equipment to evaluate the properties of the formation fluid, and manually observe the structural characteristics of the cuttings samples to realize the drilling. Recognition of formation lithology and evaluation ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/71
Inventor 佘明军李油建李胜利毛学斌孔冉
Owner CHINA PETROCHEMICAL CORP
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