Hanging load simulation calculation method
A technology of simulation calculation and weight suspension, applied in the direction of design optimization/simulation, special data processing application, etc., to achieve the effects of strong practicability, improving the success rate of operations, and saving investment and time
Pending Publication Date: 2022-01-18
北京永源思科技发展有限公司
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Problems solved by technology
The running position of the floating coupling determines the change of the wellhead hanging weight and the running depth of the casing. However, the existing technology lacks a method for theoretically calculating and simulating the wellhead hanging weight and judging the running position of the temporary barrier.
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[0038] A suspension weight simulation calculation method, comprising the following steps:
[0039] Step 1: Obtain the parameters of the operating well and the running casing through measurement, including the calculated length r and equivalent weight m of a certain section of the casing eq , the inclination angle θ of the position of the casing in the operating well and the path friction coefficient μ; the relevant parameters of the operating well can be obtained during the drilling process, and the equivalent weight of the casing can be determined by the difference between the mass of the casing itself and the mass of the medium in the casing and deduct the buoyancy generated by the casing to discharge the fluid in the well;
[0040] Step 2: Obtain the axial component force F of casing equivalent weight in the well section according to the parameters obtained in step 1 a (r), the frictional resistance F generated by the casing traveling in the well section f (r) and the sus...
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The invention discloses a hanging load simulation calculation method. The method can quickly simulate and calculate the hanging load of a running casing by measuring and acquiring parameters of an operating well and the running casing, and can obtain hanging load loss in combination with hanging load data recorded in the actual running process for correcting the simulation calculation. The method is suitable for long horizontal section cased well completion, and guarantees that the casing can be put into the designated design depth through theoretical calculation. The method solves the problem that the long horizontal section of the well completion casing pipe is put down, the drilling depth is continuously broken through in well drilling, investment and time of owners are greatly saved, and meanwhile well drilling and completion benefits are maximized. The method is popular, easy to understand and high in practicability, makes petroleum operation more refined, and increases the operation success rate by taking the theoretical basis as guidance.
Description
technical field [0001] The invention belongs to the technical field of oil and gas field development, in particular to a suspended weight simulation calculation method. Background technique [0002] With the continuous development of technology, the number of horizontal oil wells and gas wells is increasing, and the contradiction between the actual casing depth and the drilling depth is becoming more and more prominent. Therefore, how to smoothly run the casing into the specified depth has become the focus of many operators. [0003] Under the existing technology, there is a technical bottleneck in running the casing: when running the casing, the axial component of the casing’s own weight and the liquid weight in the casing on the running trajectory is used to push the casing forward. Small or even zero (when the wellbore is upturned, this component is a negative value), and at the same time, the components of the casing weight + fluid weight in the radial direction of the c...
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Login to View More IPC IPC(8): G06F30/20
CPCG06F30/20
Inventor 单永斌
Owner 北京永源思科技发展有限公司