A system for applying low pressure gas lift artificial lift enables improved efficiency in gas and oil well production. The system comprises: a central tubing in a well hole of the well, the tubing having a well head end and a well sump end; an annulus that extends around the central tubing between from the well head end to the sump end; a compressed gas source; a gas lift gas line connecting the compressed gas source to the well hole; a gas compressor having an input and an output, wherein the output is connected to the annulus; a flowline connected to the well head end of the central tubing; and an automatically controlled flowline choke in the flowline.

A system for applying low pressure gas lift artificial lift enables improved efficiency in gas and oil well production. The system comprises: a central tubing in a well hole of the well, the tubing having a well head end and a well sump end; an annulus that extends around the central tubing between from the well head end to the sump end; a compressed gas source; a gas lift gas line connecting the compressed gas source to the well hole; a gas compressor having an input and an output, wherein the output is connected to the annulus; a flowline connected to the well head end of the central tubing; and an automatically controlled flowline choke in the flowline.

A device for separating an oil phase from an aqueous phase in a remediation well and conveying said separated oil phase to a tank at the surface, wherein said device comprises: a chamber comprising at least two hoses connected to an upper part of the chamber, the hoses being communicated with an interior of the chamber; an oil phase and aqueous phase separating filter, located in the upper part of the chamber and communicated with the interior of the chamber, the filter having a lid on an upper part of the filter; and a hollow float attached to a lower part of the chamber, the float comprising a ballast at a lower end, wherein the ballast comprises a centering body at a lower end.

A device for separating an oil phase from an aqueous phase in a remediation well and conveying said separated oil phase to a tank at the surface, wherein said device comprises: a chamber comprising at least two hoses connected to an upper part of the chamber, the hoses being communicated with an interior of the chamber; an oil phase and aqueous phase separating filter, located in the upper part of the chamber and communicated with the interior of the chamber, the filter having a lid on an upper part of the filter; and a hollow float attached to a lower part of the chamber, the float comprising a ballast at a lower end, wherein the ballast comprises a centering body at a lower end.

A gas mitigation system for controlling the amount of gas that reaches a submersible pumping system deployed in a wellbore includes a well zone isolation device disposed in the wellbore between the submersible pumping system and a gas collecting region. The gas mitigation system further includes a back pressure control module and a gas vent line extending from the gas collecting region through the well zone isolation device to the back pressure control module. A liquid intake line extends from the well zone isolation device to an area of the wellbore upstream from the gas collecting region.

A gas mitigation system for controlling the amount of gas that reaches a submersible pumping system deployed in a wellbore includes a well zone isolation device disposed in the wellbore between the submersible pumping system and a gas collecting region. The gas mitigation system further includes a back pressure control module and a gas vent line extending from the gas collecting region through the well zone isolation device to the back pressure control module. A liquid intake line extends from the well zone isolation device to an area of the wellbore upstream from the gas collecting region.

A flow management and separation system for a horizontal wellbore having a primary artificial lift device having an intake has (a) a sealed central flowpath from a fluidseeker weighted keel inlet, through a recovery flow tube, a seal bore extension and a dip tube having a pump intake sealing assembly in fluid communication with the lift device intake; and (b) a mixed fluid flow path from a fluidseeker internal bypass passage, through an annulus of at least one slug catcher comprising a perforated shell.

A flow management and separation system for a horizontal wellbore having a primary artificial lift device having an intake has (a) a sealed central flowpath from a fluidseeker weighted keel inlet, through a recovery flow tube, a seal bore extension and a dip tube having a pump intake sealing assembly in fluid communication with the lift device intake; and (b) a mixed fluid flow path from a fluidseeker internal bypass passage, through an annulus of at least one slug catcher comprising a perforated shell.

An exploiting method and device of marine facies natural gas hydrate. The exploiting method comprises the following steps: (1) after the construction of a vertical well, a fixed pipe is constructed, the exploiting well is set in the center of the fixed pipe, and the mixture is filled between the inner wall of the fixed pipe and the outer wall of the exploiting well; (2) the self-excited oscillating jet nozzle enters the exploiting well along the vertical well to the designated position through an orifice on the exploiting well and sprays the mixture, so that the mixture is broken evenly to form artificial fractures; (3) under the corresponding temperature, the hydrate decomposes to produce gas by depressurized exploiting; (4) the gas-liquid mixture exploited by the exploiting well is separated into liquid and gas in the gas-liquid separation device to collect liquid and gas.

An exploiting method and device of marine facies natural gas hydrate. The exploiting method comprises the following steps: (1) after the construction of a vertical well, a fixed pipe is constructed, the exploiting well is set in the center of the fixed pipe, and the mixture is filled between the inner wall of the fixed pipe and the outer wall of the exploiting well; (2) the self-excited oscillating jet nozzle enters the exploiting well along the vertical well to the designated position through an orifice on the exploiting well and sprays the mixture, so that the mixture is broken evenly to form artificial fractures; (3) under the corresponding temperature, the hydrate decomposes to produce gas by depressurized exploiting; (4) the gas-liquid mixture exploited by the exploiting well is separated into liquid and gas in the gas-liquid separation device to collect liquid and gas.