PDC debris digital picture logging method
A technology of cuttings images and digital images, which is applied in character and pattern recognition, instruments, computer parts, etc., can solve the problems of cuttings type recognition accuracy, recognition efficiency and automation that are difficult to meet the requirements of mud logging field use
Inactive Publication Date: 2011-09-07
GEOLOGIC LOGGING SHENGLI GASOLINEEUM ADMINISTRATION +1
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Problems solved by technology
[0003] The existing cuttings feature analysis method based on image processing technology is difficult to meet the requirements of mud logging field in terms of recognition accuracy, recognition efficiency and automation degree of cuttings types
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[0018] The PDC cuttings digital image logging method consists of three functions: single-layer cuttings description, multi-layer cuttings information management and mud logging curve drawing. Among them, the function of single-layer cuttings description is realized by the two subsystems of cuttings description 17 and classifier 7 . The cuttings description 17 subsystem includes five modules: cuttings image acquisition 18, image display 6, cuttings feature description 5, microscopic description result viewing 4, macroscopic description result viewing 13, and manual identification 12; the classifier 7 subsystem includes training sample loading , training sample viewing, classifier training, and classifier recovery; the multi-layer cuttings information management function is realized by the two subsystems of well area information management 1 and multi-layer mud logging result display 2; the mud logging curve drawing function is realized by Mud logging curve depiction 3 subsystem...
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The invention discloses a PDC rock debris digital image logging method intelligently describing rock debris generated during the well drilling of a PDC drill. The method comprises the functions such as monolayer rock debris description, multilayer rock debris information management, lithologic logging curve drawing and the like. The monolayer rock debris description includes automatic recognitionand manual recognition, wherein, the automatic recognition comprises the recognition of macroscopic and microcosmic colors as well as rock description; the features of the automatic recognition are as follows: as to macrocosmic description in the automatic recognition, colors and lithologic features are directly extracted after the removal of single-layer rock debris image background and then identification is conducted separately with respective classifier; oppositely, in the microcosmic description, the image is firstly separated after the removal of the background, secondly each single-grained rock debris is extracted and then color and lithologic features are exacted for respective identification, and at last the area of the monolayer rock debris with same lithology is calculated so as to obtain the ratio between types of rock debris and to draw a logging curve figure; and during manual recognition, the types obtained through automatic recognition can be corrected and loaded in a training sample database for further upgrading classifiers and improving the recognition rate.
Description
Technical field: [0001] The patent of the present invention relates to a set of PDC cuttings based on digital image processing technology, which utilizes a large number of small cuttings, large field of view, and high-resolution images collected at the oil logging site under the condition of PDC drill bits, so as to realize the description of cuttings characteristics and intelligent identification of types A digital image logging method belongs to the fields of geological exploration and information storage. Background technique: [0002] Accurate and detailed observation and description of drilling rock samples is a powerful means to ensure the efficiency and benefits of oil exploration and development. In recent years, the PDC bit has been widely promoted in the field of exploration. Its unique rock-breaking mechanism greatly improves the drilling efficiency, and at the same time causes problems such as fine cuttings, small amount, and difficulty in distinguishing with the...
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IPC IPC(8): G06K9/00G06K9/62
Inventor 刘宗林慈兴华翟庆龙李文东郑荣儿
Owner GEOLOGIC LOGGING SHENGLI GASOLINEEUM ADMINISTRATION