Disclosed is a permeable cement stone fracturing exploitation method for non-conventional oil and gas layer such as tight oil and gas, shale gas, coal-bed gas, combustible ice and so on. The method comprises the following complementary processes and embodiments: transporting, storing and pumping process for supercritical carbon dioxide; transporting, storing, preparing and pumping process for fracturing cement slurry; process for mixing the supercritical carbon dioxide and the cement slurry; process of fracturing the supercritical carbon dioxide and the cement slurry on ground; process of forming a permeable cement stone under the ground; and so on. The present invention provides a method for non-conventional oil and gas layer fracturing exploitation without using conventional fracturing proppant and fracturing fluid, having advantages of no flow-back fluid, less water, less material, less equipment, smaller area of well site, lower cost, better stimulation effect, environmental protection, and wide application.

A frame for a longwall shearer includes a body, an internal compartment, a reservoir, and an opening. The body has an upper surface. The internal compartment is configured to support a pump. The reservoir is configured to house a liquid and includes a tank wall which is adjacent the internal compartment. The opening extends through the upper surface and into the reservoir. A filter extends into or is positioned within the reservoir. The filter is in fluid communication with the pump.

A methane production assembly comprising a subsea well (3) extending from the seabed to a methane hydrate formation (5). The assembly comprises a well casing (7) extending into the subsea well (3), a subsea well control assembly (9), a submersible pump (17) in fluid communication with the methane hydrate formation, and a methane-water separator (29) having a water outlet (31) and a methane outlet (32). The submersible pump is arranged above the subsea well.

The present invention relates to the use of a downhole pumping tool for removing a hydrate formation forming a hydrate plug in a tubing in a well, the downhole pumping tool comprising a pump having a pump inlet and a pump outlet, an electric motor for driving the pump, a wireline for powering the electric motor, the pump having a first end arranged closest to the wireline and a second end facing the hydrate plug, wherein the pump inlet is arranged in the second end, and the pump inlet contacts a first face of the hydrate plug, the pump providing suction to remove at least part of a plurality of gas molecules from the hydrate plug for dissolving at least part of the hydrate formation. The invention also relates to a hydrate removal method for removing hydrate formation forming a hydrate plug in a tubing.

An experimental device of polyphase separation of natural gas hydrate drilling fluid, and method of use thereof, comprising a solid-phase separator, a liquid injection module, a gas injection module and a gas-liquid separator. The solid-phase separator comprises a first filter device and a second filter device, the gas injection module injects gas into the solid-phase separator while the liquid injection module injects liquid into the solid-phase separator, and the gas-liquid separator is communicated with the solid-phase separator through a pressure control valve. In the experimental device and method, the combination of the liquid and the gas injection modules keeps the solid-phase separator in a high-pressure state of the gas-liquid mixture constantly to achieve the polyphase separation of natural gas hydrate drilling fluid under a high pressure, while avoiding the formation of new hydrates during separation; the provision of the dual-filter device in the solid-phase separator aids in preventing equipment blockages.

A process for removing hydrate formations from a flowline includes connecting a manifold to the flowline, passing an inert gas across a pair of inlets of the manifold so as to create a reduced pressure across the pair of inlets that is less than a pressure of a fluid in the flowline, opening a valve between the pair of inlets and the flowline so as to expose the pressurized fluid in the flowline to the reduced pressure across the pair of inlets, disassociating hydrates in the flowline by exposure to the reduced pressure across the pair of inlets, and flowing the fluid and the disassociated hydrates from the flowline into the outlet of the manifold and outwardly of the manifold through at least one of the pair of inlets.

A method for mechanically stabilizing deep sea sediments, marine raw material deposits and/or submarine slope and/or to a control/conditioning method for the hydraulic properties of deep sea sediments. A gas hydrate-forming substance is injected into marine or submarine sediments, and gas hydrate sediment composites are formed.

A system for predicting production parameters includes a production assembly configured to receive fluid from a region of an earth formation that includes a methane hydrate deposit, and a processor configured to receive data including a temperature and a pressure of the fluid, the processor configured to perform generating a mathematical model based on an energy balance relationship that includes an amount of energy estimated to be used by a dissociation reaction that produces dissociated water and dissociated gas, the energy balance relationship accounting for a first amount of energy taken by the dissociated water and a second amount of energy taken by the dissociated gas, the energy balance relationship based on the temperature of the fluid and the pressure of the fluid. The processor predicts a flow rate of the dissociated gas as a function of a pressure differential in the borehole based on the model.

A system for harvesting natural gas from a clathrate deposit includes a storage system and a processing system. The storage system is located at a surface of a body of water and is configurable to couple to a conduit for receiving a slurry including clathrate hydrate pieces and natural gas from an underwater apparatus. The processing system is coupled to the conduit and is configured to separate the natural gas from the slurry.

Systems, methods, and media for planning drilling operations using modeling and simulation systems, and information obtained from drilling rig markets. Method, systems, and computer program products perform operations including querying a database of a drilling rig market using non-technical parameters of a drilling operation. The operations also include determining technical capabilities of one or more drilling rigs identified in a response to the querying of the database. The operations further include determining well paths for the drilling operation based on the technical capabilities of the drilling rigs. Additionally, the operations include selecting a drilling rig from the one or more drilling rigs for acquisition from the drilling rig market based on the plurality of well paths and the technical capabilities of the one or more drilling rigs.