A hard pipe connecting device and manifold system are disclosed that solve technical problems of existing fracturing pipelines, such as poor safety performance, too many connecting parts, inconvenient and ineffective connection between the parts, complicated installation structure, and difficulty to adjust the distance and the angle. In order to solve the technical problems, the hard pipe connecting device includes at least one non-concentric connecting pipe joint, which includes a pipe body and first flanges at opposite ends of the pipe body. The two first flanges are parallel to each other with a distance difference h, where h>0.

A hard pipe connecting device and manifold system are disclosed that solve technical problems of existing fracturing pipelines, such as poor safety performance, too many connecting parts, inconvenient and ineffective connection between the parts, complicated installation structure, and difficulty to adjust the distance and the angle. In order to solve the technical problems, the hard pipe connecting device includes at least one non-concentric connecting pipe joint, which includes a pipe body and first flanges at opposite ends of the pipe body. The two first flanges are parallel to each other with a distance difference h, where h>0.

A wellhead penetrator includes a mandrel configured to be positioned in a tubing hanger, a wellhead, or both. The wellhead penetrator also includes a housing positioned at least partially within the mandrel. The housing defines a housing bore formed axially therethrough that is configured to receive upper and lower portions of a cable. The upper and lower portions are separated by a gap. The wellhead penetrator also includes a sealing element positioned at least partially within the mandrel and below the housing. The wellhead penetrator is configured to actuate from a first state to a second state in response to a downward force being exerted on the lower portion of the cable. The wellhead penetrator in the first state has the lower portion of the cable positioned at least partially within the housing such that a splice connection exists between the upper and lower portions of the cable.

A wellhead penetrator includes a mandrel configured to be positioned in a tubing hanger, a wellhead, or both. The wellhead penetrator also includes a housing positioned at least partially within the mandrel. The housing defines a housing bore formed axially therethrough that is configured to receive upper and lower portions of a cable. The upper and lower portions are separated by a gap. The wellhead penetrator also includes a sealing element positioned at least partially within the mandrel and below the housing. The wellhead penetrator is configured to actuate from a first state to a second state in response to a downward force being exerted on the lower portion of the cable. The wellhead penetrator in the first state has the lower portion of the cable positioned at least partially within the housing such that a splice connection exists between the upper and lower portions of the cable.

According to some embodiments, an autonomous perforating drone for downhole delivery of a wellbore tool, and associated systems and methods, are disclosed. In an aspect, the wellbore tool may be a plurality of shaped charges that are arranged in a variety of configurations, including helically, in one or more single radial planes, or opposing around a perforating assembly section, and detonated in a top-to-bottom sequence when the autonomous perforating drone reaches a predetermined depth in the wellbore. In another aspect, the shaped charges may be received in shaped charge apertures within a body of a perforating assembly section, wherein the shaped charge apertures are respectively positioned adjacent to at least one of a receiver booster, detonator, and detonating cord for directly initiating the shaped charges.

According to some embodiments, an autonomous perforating drone for downhole delivery of a wellbore tool, and associated systems and methods, are disclosed. In an aspect, the wellbore tool may be a plurality of shaped charges that are arranged in a variety of configurations, including helically, in one or more single radial planes, or opposing around a perforating assembly section, and detonated in a top-to-bottom sequence when the autonomous perforating drone reaches a predetermined depth in the wellbore. In another aspect, the shaped charges may be received in shaped charge apertures within a body of a perforating assembly section, wherein the shaped charge apertures are respectively positioned adjacent to at least one of a receiver booster, detonator, and detonating cord for directly initiating the shaped charges.

A method for providing simultaneous gas-solid or gas-solid slurry mixture chemical well stimulation of hydraulically fractured oil and gas-condensate wells in shales according to the present invention is disclosed. Injected with gas, chemicals having interacted with in-situ water alter rock properties near the fractures/fissures allowing liquids to move better, thus enlarging the swept volumes and recovery factor. The injected gas-solid mixture or gas-solid slurry mixture re-opens fractures that were closed previously due to well depletion and pressure dropping below fracture closure pressure. The process results in greater relative permeability (flow through the larger pores) which leads to more mobile fluids and greater production rates.

A method for providing simultaneous gas-solid or gas-solid slurry mixture chemical well stimulation of hydraulically fractured oil and gas-condensate wells in shales according to the present invention is disclosed. Injected with gas, chemicals having interacted with in-situ water alter rock properties near the fractures/fissures allowing liquids to move better, thus enlarging the swept volumes and recovery factor. The injected gas-solid mixture or gas-solid slurry mixture re-opens fractures that were closed previously due to well depletion and pressure dropping below fracture closure pressure. The process results in greater relative permeability (flow through the larger pores) which leads to more mobile fluids and greater production rates.

A tool for gaining lateral access to a well includes a head portion configured to advance axially forwardly relative to a lateral access passage. The tool includes a first shaft and a shaft assembly including a second shaft. The second shaft is at least partly received in the first shaft so as to be axially forwardly moveable therewith. In use, axial forward movement of the first and second shafts causes forward advancement of the head portion. The second shaft is axially forwardly moveable relative to the first shaft. The first shaft includes an internal thread and the shaft assembly includes an external thread engaging the internal thread of the first shaft so that relative rotation of the internal and external threads causes the axial forward movement of the second shaft relative to the first shaft without rotation of the second shaft relative to the first shaft.

A method and apparatus for collecting waste liquid at a wellhead from an above ground source conduit when wireline apparatus and/or associated tools are withdrawn from a well includes providing a manually portable waste liquid containment assembly having a valved conduit subassembly that is connected in fluid-tight relation to the source conduit, and admitting waste liquid into the containment assembly at the drilling site. The waste liquid containment assembly includes a water and flame resistant cellulosic container fitted with a plurality of flexible oil and water impermeable polymer bags nested one inside of the other, the innermost polymer bag containing an oil-absorbent natural product. The valved conduit subassembly has components to safely control the waste liquid during the filling of the polymer bags, including a control valve, a check valve and a pressure relief valve. Conduit couplings join the conduits, which can include flexible sections, in fluid-tight mating relation.