A coring drill tool driving structure has a driving motor (7), an outer cylinder (23) and a coring drill tool (8). The driving motor comprises an outer rotor (73) and an inner stator (75), the inner wall of the outer rotor and the outer wall of the inner stator are provided with ribs (77) mutually matched, the outer rotor and inner stator are in clearance fit, the clearance between the outer rotor and the inner stator is a driving liquid flow path (74), the outer rotor length is smaller than the inner stator length, the outer rotor is located between front and rear ends of the inner stator, the outer rotor is connected to the outer cylinder, a front end of the outer cylinder is connected to the coring drill tool, and a rear end of the inner stator is connected to a coupling (76).

A method and system for determining the volume of a drill core sample, wherein the method comprises the steps of providing a reference surface of a core tray adapted to carry at least one drill core sample, placing a drill core sample in the core tray, scanning the core tray with an electromagnetic 3D scanner to obtain a sample surface, and computing the volume of the drill core sample by comparing the sample surface with the reference surface. Scanning the sample will provide accurate and repeatable measurements even for drill core samples with non-cylindrical segments.

A system for transferring at least one subterranean core sample under pressure can include a retrieval vessel that collects and houses the at least one subterranean core sample at a sampling pressure at which the at least one subterranean core is collected. The system can also include a linear actuator that couples to the retrieval vessel through a valve in the open position at a first time, where the linear actuator facilitates removal of at least one pressure barrier from the retrieval vessel through the valve at the first time while maintaining the sampling pressure of the at least one subterranean sample. The system can further include a testing vessel that couples to the linear actuator through the valve in the open position at a second time, and a hydraulic device that facilitates pressurizing the testing vessel to the sampling pressure at the second time.

A pressured horizontal directional drilling continuous coring device includes a drilling tool assembly, a spear head, a recovery pipe and a core clamping mechanism. An interior of the drilling tool assembly is provided with a drilling tool delivery and in-place reporting mechanism, a bullet positioning mechanism, a core blockage alarm mechanism, a guiding mechanism, a buffer mechanism, and an adjusting mechanism from top to bottom. The recovery pipe is provided with a first and second recovery pipe nozzles. The drilling tool delivery and in-place reporting mechanism includes a top cap, a first spring and a spring cap mounted on one end of the first spring, so that when the first spring is in a compressed state, the spring cap is located at a lower end of the top cap, and a mud path is formed between the spring cap and the top cap.

A pressured horizontal directional drilling continuous coring device includes a drilling tool assembly, a spear head, a recovery pipe and a core clamping mechanism. An interior of the drilling tool assembly is provided with a drilling tool delivery and in-place reporting mechanism, a bullet positioning mechanism, a core blockage alarm mechanism, a guiding mechanism, a buffer mechanism, and an adjusting mechanism from top to bottom. The recovery pipe is provided with a first and second recovery pipe nozzles. The drilling tool delivery and in-place reporting mechanism includes a top cap, a first spring and a spring cap mounted on one end of the first spring, so that when the first spring is in a compressed state, the spring cap is located at a lower end of the top cap, and a mud path is formed between the spring cap and the top cap.

Systems and methods for determining mechanical properties of anisotropic media are disclosed. A method for determining mechanical properties of an anisotropic media includes obtaining log data of the anisotropic media, the log data corresponding to measurements of the anisotropic media collected with a logging tool; determining values for a plurality of first stiffness components of a stiffness matrix based on horizontal and vertical velocities derived from the log data; determining an upper bound for a second stiffness component of the stiffness matrix based on the values for the plurality of first stiffness components; estimating a value for the second stiffness component based on the determined upper bound; determining a mechanical property of the anisotropic media based on the estimated value of the second stiffness component; and providing the determined mechanical property.

Systems and methods for determining mechanical properties of anisotropic media are disclosed. A method for determining mechanical properties of an anisotropic media includes obtaining log data of the anisotropic media, the log data corresponding to measurements of the anisotropic media collected with a logging tool; determining values for a plurality of first stiffness components of a stiffness matrix based on horizontal and vertical velocities derived from the log data; determining an upper bound for a second stiffness component of the stiffness matrix based on the values for the plurality of first stiffness components; estimating a value for the second stiffness component based on the determined upper bound; determining a mechanical property of the anisotropic media based on the estimated value of the second stiffness component; and providing the determined mechanical property.

The device is operated with a conventional rotary drive with pile hammer. The torque and the ramming impacts of the drill head are transmitted to a drilling initial tube with drill bit. A sleeve without rotation stands inside the rotating initial tube. It rests at the bottom on the inside of the drill bit rotating below it. As a special feature, the sleeve is connected to the rotating drill head by means of a sleeve adapter with axially consecutive parts that can be rotated against each other and a PFR pressure, flushing and recovery tube connected to it. The PFR rotates with the drill head and the drill pipe, and the sleeve adapter communicates with the non-rotating sleeve. The PFR is used firstly to apply compressive force to the sleeve from above, secondly to flush it by guiding the flushing water for drilling in the PFR and forcing it out of the sleeve, and thirdly to allow the sleeve to be recovered for an almost undisturbed drilling test.

A method of assessing the response of a reservoir rock to low salinity water includes obtaining a formation core sample of a reservoir rock from a reservoir. In addition, the method includes sequentially washing the formation core sample with a first series of solvents to form a first series of solvent extracts and an extracted formation core sample. Further, the method includes sequentially washing the extracted formation core sample with a second series of solvents to form a second series of solvent extracts and a cleaned formation core sample. The method also includes generating a series of mass spectra of the second series of solvent extracts. The relative abundance of the catecholamine-type structures (CTS) is determined using the series of mass spectra. Still further, the method includes subjecting the formation core sample to analysis by X-ray diffraction to generate a diffraction pattern. The relative abundance of kalonite is determined using the diffraction pattern. Moreover, the method includes assessing a response of the reservoir rock to low salinity water based on the percentage of kalonite and the relative abundance of CTS.

A method of transferring at least one subterranean core sample from a retrieval vessel to a testing vessel can include removing at least one pressure barrier on the retrieval vessel using a linear actuator while maintaining a sampling pressure on the at least one subterranean core sample at which the at least one subterranean core sample is taken from a subterranean formation. The method can also include pressurizing the testing vessel to the sampling pressure using the linear actuator, and transferring the at least one subterranean core sample from the retrieval vessel to the testing vessel. The method can further include sealing the testing vessel with the at least one subterranean core sample at the sampling pressure, where the testing vessel allows the at least one subterranean core sample to be tested while the at least one subterranean core sample is maintained at the sampling pressure.