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A Correction Method of Gamma Curve in Kcl Mud System

A calibration method, mud technology, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve problems such as lack of feasibility of implementation

Active Publication Date: 2017-11-17
BC P INC CHINA NAT PETROLEUM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method can accurately correct the Gamma curve, but it lacks the feasibility of implementation in the field

Method used

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  • A Correction Method of Gamma Curve in Kcl Mud System
  • A Correction Method of Gamma Curve in Kcl Mud System
  • A Correction Method of Gamma Curve in Kcl Mud System

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Embodiment Construction

[0028] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0029] The correction of the Gamma curve under the KCl mud system of the SPD19C-02 well in the Persian Gulf South Pass area of ​​Iran is taken as a specific example below, and the present invention will be further described:

[0030] Step (1): Determination of KCl content in relevant mud of Well SPD19C-02

[0031] Through communication with the mud engineer, it is confirmed that adding KCl mud and making the total content in the well reach 10% can meet the operation requirements. KCl mud until the performance of the mud meets the operating requirements.

[0032] During this process, the exact time of adding KCl mud, the amount of lithium ions added, and the mud performan...

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Abstract

The invention discloses a method for correcting a Gamma curve in a geosteering tool under a KCl mud system in the technical field of petroleum drilling. The method comprises the following steps: (1) verifying and recording the time table for adding KCl mud; (2) ) measure the GammaAPI value after adding KCl mud to some well sections; (3) download GammaAPI data and (4) process memory data from the Gamma probe to obtain the final calibration curve; the geosteering tool under the KCl mud system of the present invention The correction method of the Gamma curve can solve the problem of accurately calculating the Gamma value of geological parameters without relevant geological reference data and correction charts, and replace the traditional experimental calculation method to realize the correction of the Gamma curve on site.

Description

technical field [0001] The invention relates to the technical field of correction methods for Gamma curves in petroleum drilling technology, in particular to a correction method for Gamma curves in a KCl mud system. Background technique [0002] The core technology of modern geosteering tools is the detection technology of gamma ions and the measurement technology of resistivity. The detection of gamma ions mainly relies on the Gamma probe. The Gamma probe can measure and record the number of γ ions in the formation, and the formed Gamma curve can assist geologists to analyze and calculate the vertical depth of the formation, and provide reliable on-site technical data for determining the target formation. [0003] Potassium in the KCl mud system is one of the main isotopes detected by the Gamma probe. The content of KCl directly affects the Gamma value of the well depth and has a great influence on the Gamma curve. [0004] At present, there are two main correction method...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50
Inventor 宋晓健董晨曦李宝鹏李猛杨国光
Owner BC P INC CHINA NAT PETROLEUM CORP