3 results about "Field development" patented technology

The invention relates to the technical field of carbon dioxide flooding oil recovery increase in oil and gas field development, and discloses a carbon dioxide flooding gas front edge dynamic change prediction method. The carbon dioxide flooding gas front edge dynamic change prediction method includes the following processes that an injection-production corresponding condition is judged by comprehensively considering the suction profile result, the injection-production well spacing and the oil well effective condition, the gas injection volume is split in the different effective oil well directions, the splitting coefficient and the gas injection volume in different oil well directions are calculated according to the gas injection efficiency speed, a fan blade model is used for calculatingthe dynamic change of the gas drive front edge position under different gas injection volumes, and carbon dioxide flooding gas front edge dynamic change prediction is realized. By means of the method,only basic data such as production dynamics data, suction profile data and injection-production well spacing are needed, data collection and processing are simple, through gas drive front edge prediction, the advancement speed of CO2 under the oil deposit condition is better grasped, the gas generating time is better predicted, the dynamic change of the miscible range can be quantitatively calculated in combination with the pressure profile, and a basis is provided for CO2 dynamic tracking evaluation and injection-production parameter optimization adjustment.

The invention discloses a tubing drilling device, and relates to the field of oil and gas field development. The tubing drilling device comprises an anchoring mechanism and a drilling mechanism, the anchoring mechanism comprises an upper sleeve, an upper joint and a slip connected sequentially from top to bottom, an upper driving part located in the upper sleeve, an upper transmission part connected with the upper driving part and a cone connected with the upper transmission part, the upper driving part drives the cone to move up and down through the upper transmission part so as to make the cone enter or leave the slip, the drilling mechanism comprises a lower sleeve connected with the cone, a lower joint connected with the lower sleeve, a lower driving part located in the lower sleeve, alower transmission part connected with the lower driving part and a drilling part connected with the lower transmission part, and the lower driving part drives the drilling part to punch a tubing through the lower transmission part. The tubing drilling device can accurately control the drilling accuracy of the tubing and improves the success rate of drilling, the operation cost and construction risk can be reduced, and meanwhile, the integrity of a wellbore can be ensured.

The invention provides a delta facies sand body spatial form characterization method which comprises the following steps: S1, preprocessing observed seismic data through a variable coefficient guideddirection optimization spatial filtering technology to improve a signal-to-noise ratio; S2, under the guidance of the longitudinal superposition characteristics of the sand body gene units identifiedby the logging data, acquiring position characteristic parameters required for characterizing the spatial form of the sand body from the preprocessed seismic data; and S3, carrying out spatial direction sensitivity research on the sand body posture characteristic parameters in inclination angles, azimuth angles and time directions to obtain optimized parameter values of equalization distribution processing. The challenge faced by the conventional method for characterizing the gene unit in the delta facies sand body is solved, and the increasingly increased high-precision characterization requirement of the reservoir in the oil and gas field development is met.