7 results about "Production packer" patented technology

An oil pipe is arranged in a casing pipe, a production packer and a top packer are arranged in an annular space between the oil pipe and the casing pipe from top to bottom, the lower end of the oil pipe penetrates through the top packer and extends into a sand prevention section of the gas well, and the oil pipe punches holes in the upper portion of the production packer; an upper rubber sleeve and a lower rubber sleeve of the suspended overflowing packer are respectively arranged on the upper side and the lower side of the punching position of the oil pipe in a setting manner, and the suspended overflowing packer is used for suspending a speed pipe; a check valve is arranged between the lower rubber sleeve and the packer body, allows annular fluid between an oil pipe and a speed pipe to flow downwards and prevents fluid produced by a stratum from flowing upwards, and a gas injection channel entering the annular space of the oil pipe and the speed pipe from the annular space of the oil pipe and a sleeve is established; and a liquid drainage and gas production channel is established between the oil pipe at the upper part of the suspended overflowing packer and the speed pipe at the lower part of the suspended overflowing packer. The production capacity of the liquid-accumulating gas well can be recovered, continuous, stable and efficient liquid drainage and gas recovery are achieved, and the recovery efficiency of the gas well is improved.

The invention discloses an offshore deep continuous foam liquid drainage gas production process pipe column and an operation method, the pipe column comprises a production sleeve, an oil pipe, a lower suspension packer, an upper suspension packer and a continuous oil pipe, a production packer and a top packer are sequentially arranged between the oil pipe and the production sleeve from top to bottom, the oil pipe is located above the production packer for punching, and the continuous oil pipe is located above the production packer for drilling. The lower suspension packer is arranged below the punching position, the upper suspension packer is arranged above the punching position, the upper suspension packer is connected with the lower suspension packer in a sealed mode through an inserting head, and the lower portion of the lower suspension packer is connected with the coiled tubing. A foam scrubbing agent channel from an oil pipe and sleeve annulus to an oil pipe and continuous oil pipe annulus is established through cooperation of multiple tools, the foam scrubbing agent is introduced into a deep shaft liquid accumulation well section below a production packer and above a production layer from the oil pipe and production sleeve annulus, and the fluid density of a shaft is reduced; the mixed fluid is discharged from the continuous oil pipe and the upper oil pipe, and continuous and stable discharging and mining of the gas well are achieved.

In the process of suspending a subsea hydrocarbon well (1) after finalizing the completion operation and prior to stimulation of the well and putting the well on production, preinstalled upper and lower glass plugs (11, 12) are used as temporary barriers in the tubing. The plugs allow various tests to be performed before the lower plug (12), below the production packer (10), is broken; the upper plug (11) located above the downhole safety valve (13) then forms one of the barriers required to suspend the well whilst the Blow Out Preventer (BOP) is removed and Xmas tree installed, at which point the upper plug (11) is broken.

A method to perform a completion operation of a wellbore is described. The method includes determining a wellbore trajectory of the wellbore penetrating a reservoir, generating a grid cell set of interest surrounding the wellbore, where the grid cell set of interest includes consecutive grid cells that are penetrated by the wellbore in the reservoir, generating, from the grid cell set of interest and using a clustering algorithm, grid cell clusters based on a grid cell position measure and a reservoir property of each grid cell, where each grid cell cluster corresponds to a flow compartment of the wellbore, and placing, during the completion operation and for each grid cell cluster, a packer at a starting position and an ending position of the corresponding flow compartment.

An ultrahigh-temperature multi-pipe real-time regulation and control layered and segmented injection-production and long-acting monitoring device is characterized in that a heat insulation oil pipe is arranged at the lower end of a large oil pipe hanger, and a high-temperature production packer is arranged on the heat insulation oil pipe; the heat insulation oil pipe is sequentially connected with the high-temperature jet pump outer working barrel, the high-temperature deep well safety valve, the oil pipe inside and outside penetrating short section, the open type telescopic short section and the steam injection and liquid production channel switching valve, and the steam injection and liquid production channel switching valve is concentrically connected with the first-stage independent injection and liquid production pipe column, the second-stage independent injection and liquid production pipe column and the inserted sealing inner working pipe column. The method has the beneficial effects that an ultrahigh-temperature multi-pipe injection and production switching mode is combined with a high-temperature injection and production integrated process, and the method is not limited to combination of injection and production processes such as high-temperature jet pump injection and production integration, high-temperature Y-pipe electric pump injection and production integration and high-temperature casting and fishing electric pump / screw pump injection and production integration; fine regulation, control, steam injection and liquid production and long-acting monitoring of a large-well-spacing long-well-section horizontal well and a multi-layer high-inclination directional well can be achieved, and the injection and production effect and efficient development of heavy oil thermal production are guaranteed.

The invention discloses a carbon dioxide oil displacement well completion pipe string which comprises a casing pipe, an oil pipe arranged in the casing pipe, a production packer, multiple sets of packing assemblies and an optical fiber pressure monitoring mechanism. The multiple sets of packing assemblies are located below the production packer and distributed at intervals, and the lower space, located below the production packer, of the casing pipe is divided into multiple sections of cavities. The oil pipe penetrates through the production packer and the multiple sets of packing assemblies, and a hydraulic control injection allocation device is arranged on the oil pipe section located in each cavity and connected to a control system through a hydraulic control pipeline. The optical fiber pressure monitoring mechanism is used for monitoring air pressure in the cavity; the control system cooperates with the air pressure measured by the optical fiber pressure monitoring mechanism, the opening degree of the hydraulic control injection allocator is adjusted through the hydraulic control pipeline, and then the carbon dioxide injection amount is adjusted. Through the cooperation of the hydraulic control injection allocator and the optical fiber pressure monitoring mechanism, the dynamic regulation and control of the gas injection amount of each layer of cavity is realized, the problem of low sweep efficiency caused by non-uniform gas injection of a traditional tubular column is solved, and the recovery efficiency can be greatly improved.

The application discloses a pipe string structure and a control method for self-flow gas injection from a high-pressure layer to a low-pressure layer, and improves technical problems such as high well completion operation cost and great process difficulty. The pipe string structure comprises a wellbore casing, an isolation assembly, a filter assembly and a gas injection assembly. The gas injection assembly comprises: a gas injection production pipe string arranged in the wellbore casing; a production packer arranged on the gas injection production pipe string and fixedly seated with the wellbore casing, and the production packer is located above a low-pressure layer of a formation; a distribution and injection valve arranged on the gas injection production pipe string and located below the production packer, and the distribution and injection valve is located at the low-pressure layer of the formation; and a sealing part connected to the bottom of the gas injection production pipe string and sealingly connected with the isolation assembly. The application can realize self-flow of natural energy of a high-pressure layer gas group to a low-pressure layer gas group in the same well, improve the recovery rate of the low-pressure layer gas group, save cost and reduce the well completion process difficulty, and the oil well can be subjected to separate layer exploitation in the later period.