Disclosed is a fracturing device for extraction of coalbed methane in low permeability reservoir. In the disclosure, by controlling the fracturing of fracturing pipes and the sealing of a segmented sealing mechanism for fracturing using a fracturing controller, the fracturing in fracturing holes can be effectively controlled. The segmented sealing mechanism for fracturing in the disclosure can separate each of the fracturing pipes in the fracturing holes separately in a sealed manner respectively, and perform segmented fracturing operations using each of the fracturing pipes, so as to effectively improve the uniformity and thoroughness of fracturing and ensure fracturing ability. In the disclosure, when the sealing operations are performed in each segment, the sealing effect of each segment can be ensured, and the sealing efficiency can be ensured, so that the fracturing ability of each segment of fracturing is improved to ensure the fracturing effect.

A well system comprising at least one gas well extending from a ground surface into the ground, a water production well extending from a surface into the ground and a water drainage well fluidly connecting the at least one gas well to the water production well.

Dual-walled coiled tubing assemblies are used to dispose a flow actuated pump into a wellbore. Dual-walled coiled tubing assemblies include an inner coiled tubing string and an outer coiled tubing string.

A sectional pumping apparatus for well casing includes a discharge pipe, a submersible pump, a pump housing, a swab tool, and a central axis. The discharge pipe, the submersible pump, the pump housing, and the swab tool are concentrically positioned along the central axis. The discharge pipe includes a first tubular body and a flange connector. The flange connector is radially connected around the first tubular body. The submersible pump is hermetically attached to a pump end of the first tubular body. The submersible pump and the pump end are positioned within the pump housing as the first tubular body is hermetically attached to a top end of the pump housing through the flange connector. The swab tool is hermetically attached to a bottom end of the pump housing and is in fluid communication with the discharge pipe through the submersible pump.

An improved plunger lift assembly, system, and method that can be used in all types of oil and gas wells including those of vertical, highly-deviated, S-curved, or horizontal bores is described. The plunger lift assembly can be part of a plunger lift system used to lift fluid formations out of a wellbore having a production tubing with a drift diameter. The plunger lift assembly may include a mandrel having a chamber, an elastic sealing mechanism, and a shift rod. The sealing mechanism can be disposed about an exterior of the mandrel. The sealing mechanism may be activated by at least one of pressure in the mandrel chamber and vertical force from movement of the mandrel. The shift rod can control fluid flow through the mandrel chamber.

A method of lifting liquids from a formation using a plunger lift assembly. The method includes dropping a multi-component plunger lift assembly from a wellhead and into a wellbore. This is done in response to a release signal or in response to a wellhead being shut in. The wellbore has a deviated section which may extend to horizontal. The multi-component plunger lift assembly includes a cylindrical plunger and a sphere. These components are released into the wellbore simultaneously. In response to reservoir formation gases passing into the wellbore, the method also includes allowing the plunger lift assembly to move up the wellbore and to the wellhead, thereby pushing liquids upwardly towards the wellhead.

A chemical stick launcher includes a stack of vertically mounted low voltage electrically operated valves providing spaces between the valves for chemical sticks. The valves are manipulated by a controller to drop sticks from the compartments between the valves after suitable time delays so the launcher can supply chemicals to a hydrocarbon well over a period of time. The stack is insulated to reduce the operating temperature of the launcher and thereby allow a wider variety of chemical compositions to be used. The low voltage electrically operated valves include a front panel providing a visual indicator of whether the valves are open or closed. The valves are mounted on the stack so the front panels face in the same direction so a standing person can see all the indicators from a single position.

A scale sampler plunger having an upper end and a downhole end for a plunger lift system in a tubing string comprising: a solid cylindrical member at the upper end of the scale sampler plunger configured to remove a plurality of contaminants in the tubing string; a lower sub at the downhole end of the scale sampler plunger threaded to the solid cylindrical member, wherein the lower sub comprises a first section threaded to a second section extending axially from the first section; wherein a fluid stream carrying solids flows from the tubing string into an entry opening located in the second section; a deflector disposed in a chamber in the lower sub, wherein the deflector causes the fluid stream carrying solids to deposit the solids in the chamber in the lower sub; and an anchor disposed in the entry opening, wherein the anchor is fastened to the deflector.

The present disclosure relates to a pump system having a pneumatically actuated fluid pump, which makes use of standard cycle counter to assist in determining when an air supply control valve is stuck in an open state after a fluid discharge cycle has completed. The system includes an electronic controller which receives signals from the cycle counter. The signals indicate a position of a sensing element inside the cycle counter. The electronic controller uses the signals to determine if the sensing element is still experiencing a pressurized airflow after a fluid discharge cycle has completed and the air supply control valve has been commanded to close.

A downhole tool movement control system and method of use, such as a movement control system to control the speed of a plunger tool when operating within a tubing string of a wellbore, such as when rising within a tubing string of a wellbore. In one embodiment, the downhole tool movement control system includes a system controller operating to control a system valve to regulate the plunger tool speed, the system controller settings based on a set of system parameters.