A pressure compensation device with an accumulator group for controlled pressure drilling includes an electrical flat valve, a check valve, an accumulator group, a flanged pup joint and a support base. The electrical flat valve is connected to the check valve and is mounted on a top surface of the support base. The accumulator group mounted on the whole support base is a pre-storage pressure compensation device for controlled pressure drilling, and is located at a downstream position of the check valve. The liquid inlet end of the accumulator group is connected to the check valve, and the liquid discharge end is connected to the flanged pup joint.

Systems and methods are provided for analyzing isotopes of a gas from a wellbore to determine geological information associated with the wellbore. A drill device can be used to drill rocks or particles in a wellbore, which can cause a gas to be released within the wellbore. Fluid can be pumped into the wellbore as the drill bit drills the rocks or particles and the fluid, along with the gas released, can flow through the wellbore and to a surface of the wellbore. A gas detector can be positioned near the wellbore for detecting an amount of gas and a type of gas in the fluid and gas mixture and transmitting data about the amount and type of the gas to a computing device. The computing device can output data based on the amount and type of gas in the mixture for determining geological information about the wellbore.

Systems and methods are provided for analyzing isotopes of a gas from a wellbore to determine geological information associated with the wellbore. A drill device can be used to drill rocks or particles in a wellbore, which can cause a gas to be released within the wellbore. Fluid can be pumped into the wellbore as the drill bit drills the rocks or particles and the fluid, along with the gas released, can flow through the wellbore and to a surface of the wellbore. A gas detector can be positioned near the wellbore for detecting an amount of gas and a type of gas in the fluid and gas mixture and transmitting data about the amount and type of the gas to a computing device. The computing device can output data based on the amount and type of gas in the mixture for determining geological information about the wellbore.

Embodiments of systems and methods for generating power in the vicinity of a drilling rig are disclosed. During a drilling operation, heat generated by drilling fluid flowing from a borehole, exhaust from an engine, and/or fluid from an engine's water (or other fluid) jacket, for example, may be utilized by corresponding heat exchangers to facilitate heat transfer to a working fluid. The heated working fluid may cause an ORC unit to generate electrical power.

A fluid storage system includes a receptacle, configured to store a fluid, delimited by a sidewall and a bottom surface wherein the bottom surface has a degree of slope directing the bottom surface to an orifice. The system further includes an inlet pipe configured to transport the fluid from an oil rig to the receptacle, an outlet pipe configured to transport the fluid from the receptacle to the oil rig, an agitator having a shaft and a propeller, a jetting line equipped with a nozzle configured to release a jetting fluid towards the sidewall and the bottom surface of the receptacle, and an interlock switch configured to automatically shut off the agitator and the jetting line.

A fluid storage system includes a receptacle, configured to store a fluid, delimited by a sidewall and a bottom surface wherein the bottom surface has a degree of slope directing the bottom surface to an orifice. The system further includes an inlet pipe configured to transport the fluid from an oil rig to the receptacle, an outlet pipe configured to transport the fluid from the receptacle to the oil rig, an agitator having a shaft and a propeller, a jetting line equipped with a nozzle configured to release a jetting fluid towards the sidewall and the bottom surface of the receptacle, and an interlock switch configured to automatically shut off the agitator and the jetting line.

Analysis and logging of drilling mud using a mud analysis system and controlling drilling operations responsive to the mud analysis and logging. The system and methods may automatically sample and analyze drilling mud and control the drilling of a well responsive to the mud analysis. The mud analysis system may acquire measurements on a sample of the drilling mud during drilling and may send signals indicative of the drilling mud to a steering control system enabled to control the drilling.

Analysis and logging of drilling mud using a mud analysis system and controlling drilling operations responsive to the mud analysis and logging. The system and methods may automatically sample and analyze drilling mud and control the drilling of a well responsive to the mud analysis. The mud analysis system may acquire measurements on a sample of the drilling mud during drilling and may send signals indicative of the drilling mud to a steering control system enabled to control the drilling.

A method includes introducing into a drilling fluid a plurality of tags having a first clay nanoparticle and a first polymer embedded into the clay nanoparticle and circulating the drilling fluid and tags through a well during a drilling operation that creates formation cuttings such that the tags interact with the formation cuttings, creating tagged cuttings. The returned cuttings are collected from the circulating drilling fluid at a surface of the well, and the tags on the returned cuttings are detected to identify the tagged cuttings. The method also includes correlating the tagged cuttings with a drill depth in the well from the drilling operation.

A method includes introducing into a drilling fluid a plurality of tags having a first clay nanoparticle and a first polymer embedded into the clay nanoparticle and circulating the drilling fluid and tags through a well during a drilling operation that creates formation cuttings such that the tags interact with the formation cuttings, creating tagged cuttings. The returned cuttings are collected from the circulating drilling fluid at a surface of the well, and the tags on the returned cuttings are detected to identify the tagged cuttings. The method also includes correlating the tagged cuttings with a drill depth in the well from the drilling operation.