Tension leg platform cluster well batch well drilling method
A tension leg platform and well batch technology, which is applied in underwater drilling, wellbore/well components, measurement, etc., can solve the problems of dense distribution and low drilling efficiency of tension leg platforms, and achieve high determination accuracy and drilling goals. Flexibility and the effect of improving drilling efficiency
Active Publication Date: 2020-06-05
CHINA NAT OFFSHORE OIL CORP +1
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Problems solved by technology
[0004] Aiming at the above-mentioned problem of densely distributed cluster wells on the tension leg platform, the purpose of the present invention is to provide a batch drilling method for cluster wells on the tension leg platform, which is used to solve the problem of low efficiency of the existing tension leg platform drilling operation, and has a higher efficiency and reliability
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[0018] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.
[0019] Such as figure 1 As shown, the present invention provides a batch drilling method for cluster wells on a tension leg platform, comprising the following steps:
[0020] 1) Analyze the configuration of TLP cluster wells that need to be drilled in batches, and establish the drill pipe-drilling riser finite element analysis model according to the determined drilling riser and drill pipe configuration;
[0021] 2) Carry out batch drilling simulation to obtain the simulation results of the drill pipe-drilling riser finite element analysis model under different drilling offset distances;
[0022] 3) Perform finite element analysis on the simulation results obtained in step 2) based on the pre-established batch drilling restriction criteria, and determine the maximum drilling range for batch drilling of cluster wells on the tension leg platform.
[0...
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The invention relates to a tension leg platform cluster well batch well drilling method. The tension leg platform cluster well batch well drilling method is characterized by comprising the following steps that (1), the configuration condition of a tension leg platform cluster well needing batch well drilling is analyzed, and a drill rod-well drilling vertical pipe finite element analytical model is built according to the determined configuration condition of a well drilling vertical pipe and a drill rod; (2), batch well drilling simulation is carried out, and a simulated result of the drill rod-well drilling vertical pipe finite element analytical model under different well drilling offset distance states is obtained; and (3), finite element analysis is carried out on the simulated resultobtained in the step (2) based on a batch well drilling limiting rule built in advance, and the largest well drilling range of the tension leg platform cluster well during batch well drilling is determined. According to the tension leg platform cluster well batch well drilling method, the tension leg platform well drilling operation efficiency can be greatly improved, the utilization rate and economic benefits of the well drilling vertical pipe and a platform are improved, and thus the tension leg platform cluster well batch well drilling method can be widely applied to the field of tension leg platform cluster well batch well drilling.
Description
technical field [0001] The invention relates to a batch drilling method for cluster wells on a tension leg platform, which belongs to the technical field of offshore oil equipment, and is especially suitable for batch drilling of cluster wells with deep operating water depth and densely distributed underwater wellheads. Background technique [0002] As one of the platforms for offshore oil and gas development, the tension leg platform is a vertically moored compliant platform. The tension leg system is always in a tensioned state, which makes the platform have good motion performance and stability, and is especially suitable for the development of oil and gas resources in the South my country Sea. [0003] The tension leg platform has the characteristics of cluster wellheads, the wellheads are arranged at equal intervals, and the distribution is relatively dense. At present, there are two methods of drilling operations for tension leg platforms: individual drilling and batc...
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IPC IPC(8): E21B7/12E21B43/30E21B47/06E21B47/00G09B25/04
CPCE21B7/12E21B43/30E21B47/00E21B47/06G09B25/04
Inventor 许亮斌盛磊祥周建良畅元江李朝玮陈国明路鹏李家仪马海艇
Owner CHINA NAT OFFSHORE OIL CORP