Method and system for identifying lithology in real time in drilling process
A lithology and drilling technology, which is applied in character and pattern recognition, earthwork drilling, wellbore/well components, etc., can solve problems such as difficulties in obtaining real-time lithology information downhole, improve accuracy and timeliness, and improve downhole Tool life, effect of increasing drilling speed
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Embodiment 1
[0080] The methods include:
[0081] (1) Collect adjacent well data: collect time series logging data and drilling data of adjacent wells to be drilled.
[0082] The time series logging data and drilling data include: vertical depth, slant depth, displacement, weight on bit, rotational speed, hook load, inlet flow rate, drilling fluid density, ROP, turntable torque, bit size and bit type.
[0083] (2) Build feature sets and label sets: use the time series logging data and drilling data of the adjacent wells to build feature sets and label sets, specifically including:
[0084] (21) According to the oblique depth, displacement, rotational speed and WOB in the mud logging data, screen the data belonging to the drilling condition: screen out the mud logging data that meet the following conditions from the mud logging data, and the data used later is the The mud logging data screened out in the steps and the corresponding drilling data;
[0085] Q i >1L / s and MD i >MD i-1 and...
Embodiment 2
[0127] Such as Figure 6 As shown, the second aspect of the present invention provides a kind of lithology identification system, and described lithology identification system comprises: historical data processing unit 10, basic model building unit 20, real-time data processing unit 30, model correction and lithology Sex recognition unit 40, result output unit 50.
[0128] The historical data processing unit 10 is used to collect and store the mud logging data and drilling data of adjacent wells, and utilize the mud logging data and drilling data to construct feature sets and label sets; feature set and label set;
[0129] The basic model building unit 20 is connected with the historical data processing unit 10, and uses the feature set and the label set constructed by the historical data processing unit 10 to train the basic model of lithology identification; specifically, adopt the steps (3) in the above method ) to train the basic model of lithology identification;
[01...
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