134 results about "Directional drilling" patented technology

This invention relates to the field of exploration and development, and discloses a method, system, and equipment for quantitative analysis of friction resistance in directional drilling. The method includes: acquiring logging information and drill bit speed in the drilled section; constructing a drilling speed prediction model using the drill bit speed and the composite drilling data; determining a bottom hole pressure prediction model based on the directional drilling data and the drilling speed prediction model; combining the bottom hole pressure prediction model with the surface pressure to determine a drill string axial friction resistance model; and calculating the axial friction resistance in the real-time directional drilling process using the drill string axial friction resistance model based on the logging information and drill bit speed. The quantitative friction resistance analysis method disclosed in this application solves the problem of difficulty in accurately assessing bottom hole pressure and axial friction resistance, enabling dynamic assessment of theoretical bottom hole pressure and axial friction resistance. It allows for full-process monitoring and post-drilling analysis of sliding drilling, providing a basis for improving the bottom hole drill string load condition.

The application discloses a downhole large-diameter drilling equipment, which comprises a large-diameter pipe-following drilling machine, a large-diameter pipe-following directional drilling system, a collapsed body metal detection and breaking system and a self-moving multifunctional rescue operation cabin; wherein the large-diameter pipe-following drilling machine is used for efficiently constructing a large-diameter horizontal hole as a rescue passage; the large-diameter pipe-following directional drilling system adopts a first-level, second-level or third-level hole protection mode according to the length of a collapsed body and a stratum; the system can realize efficient drilling and accurate guidance in a complex collapsed stratum, and guarantee that the drilling quality and the drilling track meet the requirements; the collapsed body metal detection and breaking system can finely detect metal components in the collapsed body, determine the accurate position and scale of the metal components, and realize rapid cutting of the metal components; and the self-moving multifunctional rescue operation cabin can be used as an auxiliary obstacle removing at the bottom of a rescue hole to improve the rescue drilling construction efficiency while guaranteeing the safety of personnel in the cabin.

The application relates to a directional drilling structure for a navigable river and an application method thereof, and relates to the drilling technology field; the directional drilling structure for the navigable river comprises a drill bit body, an agitating frame is rotationally connected to the end of the drill bit body, a control element is arranged on the drill bit body, and the control element is used for driving the agitating frame to rotate; the application has the effect of reducing the possibility of yaw in the drilling process of the drilling equipment.

The utility model discloses a directional drilling unjamming device relates to directional drilling unjamming technical field, including base, be equipped with lifting assembly on the base and be located opening both sides respectively, be equipped with hammering subassembly on the base and be located opening rear, the utility model will the fixed mounting of bottom plate be in the drill rod, and make the drill rod embed in the opening and the mouth, the plug -in block is inserted into the dovetail groove through the dovetail rod at this time, the plug -in block is installed at the mouth, the first through -hole and the second through -hole are located on the same axis at this time, insert the limiting bolt into the first through -hole and the second through -hole, and the limiting nut is screwed on the limiting bolt, the upper slip body is inserted into the upper slip seat at this time, and then the drill rod is fixed, the upper slip seat is pushed through the lifting assembly, and then the upward thrust is provided to the drill rod, and the vibration force and the knocking force are provided to the upper slip seat through the hammering subassembly, and then the drill rod is unjammed.

This invention provides a method for expanding the functionality of directional boreholes for grouting in Ordos limestone aquifers. The method includes acquiring and analyzing mine hydrogeological data, determining the lithological structure characteristics, sedimentary characteristics, geological structural distribution parameters, and hydrogeological parameters of the coal seam floor, constructing a stratigraphic structure model, analyzing the hydrogeological parameters based on the stratigraphic structure model to determine the treatment strata in the Ordos limestone aquifer, analyzing the geological structural distribution parameters based on the stratigraphic structure model to determine the trajectory design parameters for the directional borehole, determining the function of the directional borehole according to the project objective and pre-defined directional borehole function classification information, and designing the directional borehole corresponding to the treatment strata and / or the borehole trajectory design parameters. This method refines the functional classification of directional boreholes, provides design methods for directional boreholes with different functions, expands the functionality of directional boreholes, and makes the surface area treatment technology for Ordos limestone water hazards more comprehensive, applicable, and targeted.

This utility model discloses a directional drilling structure, including a square tube with symmetrically arranged strip-shaped grooves on its sidewalls. Drilling structures are installed within these grooves, and the outer sides of the two drilling structures are fixedly connected to the inner wall of the square tube. During directional drilling, the drilling structures provide orientation, while simultaneously providing clamping force via hydraulic cylinders. These structures also have a spacing adjustment function, ensuring smooth rotation while clamping the drill rod. When the drill rod needs to be removed, a servo motor is installed. The servo motor provides power to the arc-shaped rotating roller, assisting in the upward removal of the drill rod and providing stable drilling guidance. It also provides sufficient limiting to avoid difficulties in drilling bare holes. During directional drilling, an annular plate is also installed at the top of the square tube to limit the top of the drill rod, ensuring it is centered and that the directional drilling proceeds in the designed direction.

The utility model relates to a drill rod box convenient to dismount belongs to the coal mine directional drilling machine technical field. The drill rod box mainly comprises box frame, internal baffle system and side -hanging type support subassembly, realizes quick dismounting and multi -specification compatible function through the innovative modularization design. The specific scheme adopts the U type frame structure of open top, and the inside is provided with the vertical baffle of adjustable spacing and forms the multiple column storage cavity, and the baffle is equipped with the replaceable buffer pad, and the bottom support adopts L shape and is connected spare and realizes the lateral suspension installation. The design solves the technical problem that the traditional drill rod box is difficult to dismount, and the function is single, has the outstanding advantages such as high space utilization, strong adaptability, convenient maintenance, especially is applicable to the operation scene that the downhole drilling equipment needs to frequently replace the drill rod box, can significantly improve the construction efficiency and reduce the equipment maintenance cost.

This invention discloses a method for optimizing a geological model by scanning the well inclination angle. It aims to solve the problem of low efficiency and poor accuracy in directional drilling where the geological model inclination angle is constantly fitted to the actual drilling curve to correct the geological model. The core steps are as follows: Step 1: Establish a geological steering model for the current drilling based on the logging and structure of the completed well. Step 2: Set the actual logging curve of the drilling trajectory AB segment as the target curve, and extract the simulated curve from the geological steering model along this segment of the well trajectory. Step 3: Set the inclination scanning range 'a' and the scanning step size 'dlt', read the well inclination angle ∠A at point A, and perform an inclination scanning of the well inclination of segment AB with a step size of 'd1t' within the range of ∠A-a to ∠A+a, extracting the simulated curve from the model at each inclination angle. Step 4: Calculate the similarity between the simulated curve and the target curve using the similarity calculation formula within the range of ∠A-a to ∠A+a, and record the inclination angle difference when the similarity is the maximum. Step 5: Use the angle difference recorded in Step 4 to make the geological model angle after point A equal to the original angle plus the angle difference. Step 6: To ensure continuous model updates, calculate the inclination point forward from point A, thereby guiding directional drilling.

This invention provides a dual-mechanism side-push horizontal directional drilling rig, comprising a chassis assembly, a guide rail frame, a push-pull platform, a power head, two sets of push-pull mechanisms, and a clamping assembly. The guide rail frame is mounted on the chassis assembly, and the guide rail beam includes two parallel guide rail beams. The two ends of the push-pull platform are slidably connected to the two guide rail beams respectively. The power head is located at the center of the push-pull platform, and the two sets of push-pull mechanisms are symmetrically arranged at both ends of the push-pull platform. This invention employs a dual-push-pull mechanism design, where the push-pull force axes of the two sets of push-pull mechanisms are on the same plane as the axis of the power head's rotating spindle, and the two sets of push-pull mechanisms are symmetrically arranged on both sides of the power head. This ensures that the resultant force of the push-pull forces of the two sets of push-pull mechanisms coincides with the axis of the power head's rotating spindle, forming a balanced force with the reaction force transmitted from the drill rod to the rotating spindle during construction. This avoids eccentric torque caused by the push-pull driving force and the drill rod's push-pull reaction force being off-axis.

The application relates to a precision prevention and control device for directional drilling governance Ordovician limestone water, and relates to the technical field of coal mine water prevention and control. The device comprises a directional drilling mechanism for multi-angle drilling, a trajectory monitoring mechanism for real-time monitoring and correction of drilling trajectory, and a probe-drilling-irrigation-monitoring-collaboration mechanism for realizing drilling group grouting process and linkage grouting. The trajectory monitoring mechanism and the probe-drilling-irrigation-monitoring-collaboration mechanism are arranged in the directional drilling mechanism. The directional drilling mechanism can realize multi-angle drilling, reduce the governance blind area, expand the governance range, improve the governance effect and does not affect the mining connection. The trajectory monitoring mechanism can realize real-time monitoring and correction of the drilling trajectory, and ensure the accuracy of the drilling direction. The probe-drilling-irrigation-monitoring-collaboration mechanism can realize drilling group grouting process and linkage grouting, and accurately governs Ordovician limestone water.

This invention discloses a nitrogen-driven pneumatic directional drilling equipment for downhole cuttings removal in soft coal seams, comprising a nitrogen drive mechanism and a directional drilling rig. The directional drilling rig has a directional drill string assembly structure, which includes a drill rod. A probe outer tube is coaxially sleeved inside the drill rod, and a measuring probe is coaxially sleeved inside the probe outer tube. The measuring probe is used to measure the gas flow rate and pressure in the borehole. An annular downward air chamber for nitrogen gas flow is formed between the inner wall of the probe outer tube and the outer wall of the measuring probe. An air inlet is opened on the outer wall of the drill rod at the lower part, and an annular upward air chamber for nitrogen gas flow is formed between the inner wall of the drill rod above the air inlet and the outer wall of the probe outer tube. A trumpet-shaped wind shield, wider at the bottom and narrower at the top, is connected to the outer wall of the drill rod above the air inlet. This invention also discloses a corresponding borehole cuttings removal method. This invention significantly reduces the resistance to airflow, achieving faster drilling speeds and removing more cuttings under the same air volume and pressure.

The present application discloses a kind of open coal mine shallow goaf exploration management method, including construction near horizontal exploration directional drilling and determine goaf boundary, determine whether there is governable cavity in goaf, if yes, then management, if not, then end work;Mark ground engineering safety area;In ground engineering safety area, construction is connected with goaf Inclined filling drill hole;In the inclined filling drill hole, laser radar is lowered into to obtain scanning result;According to scanning result, the number of inclined filling drill hole that needs to be drilled is determined, and the supplementary construction of inclined filling drill hole is completed;One inclined filling drill hole is used as gas discharge channel in goaf, and the rest of the inclined filling drill hole is used as goaf filling channel, and solid waste material is sprayed into goaf by gas jet filling system;After the end of solid waste material delivery, grouting is injected into goaf through inclined filling drill hole and near horizontal exploration directional drilling respectively and is cured;Through inclined filling drill hole, grouting is supplemented, and the exploration management of goaf is completed.

The application provides a hollow screw motor-based drilling directional electric sealed pressure-maintaining coring drill, which comprises a coring unit, the coring unit comprises an openable and closable drill bit, the drill bit comprises a drill bit body which is internally hollow and open at two axial ends, the drill bit body is connected with a coaxially arranged coring outer tube, and a coring inner tube is coaxially arranged in the coring outer tube. A bottom sealing ball valve and a top sealing ball valve are respectively arranged in the coring inner tube close to the two axial ends, a bottom rack is further arranged on the inner side wall of the drill bit body in the axial direction, the bottom rack is matched with the bottom sealing ball valve, a top rack is further arranged on the inner side wall of the coring outer tube in the axial direction, the top rack is matched with the top sealing ball valve, the movement of the coring inner tube along the bottom rack and the top rack drives the bottom sealing ball valve and the top sealing ball valve to synchronously rotate, and the synchronous opening and closing of the two ends of the coring inner tube are realized. The application can be used to realize the integrated operation mode of drilling direction and sealed coring, and is beneficial to the synchronous improvement of the construction efficiency and the measurement accuracy of the gas content parameter.

The application discloses a kind of super-long steeply inclined angle inclined shaft high-precision guide hole directional drilling and reverse shaft drilling combination construction method, it is related to inclined shaft construction technical field, including in the process of guide hole drilling construction, the drilling trajectory of drill bit is obtained in real time using measurement-while-drilling system;Drilling trajectory of drill bit is compared with preset drilling trajectory, and tool face angle of drilling tool is corrected and analyzed when deviation exceeds threshold range;Based on the analysis result, the adjustment amount of tool face angle of drilling tool is obtained, and the adjustment amount obtained is used to adjust tool face angle;When guide hole construction is to last 60 meters, switch to rotating magnetic field ranging system to guide the drilling trajectory of drill bit until the construction of guide hole is completed;Reverse shaft drilling machine is used to ream the guide hole, and the construction of inclined shaft is completed and the like steps, the present application effectively overcomes the influence of gravity and formation in the prior art, and can realize accurate construction of guide hole, effectively improving the construction quality of inclined shaft project.

The utility model discloses a kind of gob coalbed methane rapid plugging devices, it is related to gas layer plugging technical field, including directional drilling rig and mixing box, mixing box is used to store filling material, support frame carries out stirring to filling material in mixing box, improve the injection efficiency of filling material, improve the plugging speed to gas layer, and support frame quantitative injection retarder or accelerator in mixing box changes the coagulation speed of filling material, improve the plugging effect to gas layer, while the filling material in mixing box is stirred, the inside wall of mixing box is scraped, avoid that filling material sticks in the inside wall of mixing box, the utility model improves the speed and efficiency of plugging to gas layer.

A system and method may include receiving real-time downhole data from one or more sensors of a drill string disposed in a borehole in a subterranean geological region during a directional drilling operation. The system and method also include selecting a drill string drilling mode from a plurality of drill string drilling modes. The systems and methods may additionally include predicting, in real-time, characteristics of the bottom hole of the borehole using the drilling pattern model and at least a portion of the real-time downhole data. The system and method may also include using one or more characteristics to control directional drilling operations.

The present application relates to a kind of hard rock crossing of non-excavation directional drilling based on submarine cable landing construction method, belong to the technical field of optical cable layout, including the following steps: design from high to down and between vertical plane certain angle and the preset trajectory of through hard rock slope surface;Control directional drilling machine along the preset trajectory and drill guide hole;Control the drill rod of directional drilling machine along the preset trajectory and back drag, and finally form guide final hole by expanding the guide hole;Excavation anchoring well of construction operation and the cable trench being communicated with the anchoring well at suitable position, and install anchoring device inside anchoring well;Drag rope of armoured submarine cable is passed from guide final hole to shore.The present application avoids trenching on hard rock, reasonably reduces construction cost, avoids trestle erection on steep slope at the same time, reduces the landscape influence to rock shore reef, avoids the influence of scouring, corrosion to cable structure.

The application discloses a coring device and relates to the technical field of engineering geological exploration, and aims to solve the problem of how to improve the efficiency and quality of horizontal directional drilling. The coring device comprises a drill bit and a drill rod connected with each other, a cutting assembly, a fishing assembly and a pushing assembly, the drill bit is suitable for drilling a rock hole and driving the drill rod into the rock hole, a door body is arranged on the peripheral wall of the drill rod, the door body is suitable for opening or closing a first opening, a containing cavity is formed in the drill rod and communicates with the first opening, the cutting assembly is arranged in the containing cavity, the cutting assembly communicates with the first opening, and the cutting assembly is used for cutting the surrounding rock outside the drill rod via the first opening to obtain a rock core, the fishing assembly is arranged in the containing cavity, the fishing assembly is used for storing the rock core and sending the rock core out of the drill rod, and the pushing assembly is used for pushing the rock core from the cutting assembly into the fishing assembly.

This invention relates to the field of underground gas extraction in coal mines, specifically to a deep-hole regionalized gas extraction process for coal mines. The process includes area division and geological assessment; drilling operations are conducted by using a directional drilling rig to drive the drill bit and cutting device towards the extraction unit; the directional drilling rig is then fed in reverse; the water injection pressure of the clean water pump is controlled to be greater than the elastic force of spring one of the cutting device, thus pushing the cutting body of the cutting device to perform a flapping motion; the water injection pressure of the clean water pump is also controlled to be greater than the elastic force of spring two of the cutting device, causing water to be sprayed through the nozzle of the cutting device towards the borehole wall, stimulating the borehole wall to expand and generate new cracks; after the drill bit is removed from the borehole, pipes are installed inside the borehole. This invention provides a convenient, remotely controlled deep-hole regionalized gas extraction process for coal mines, facilitating hydraulic fracturing operations.

This invention relates to the field of geological technology, providing a method and apparatus for synchronous prediction of rock mass information during directional drilling. The method includes: acquiring real-time drilling parameters during the drilling process; inputting the real-time drilling parameters into a first rock mass information prediction model to obtain discrete first rock mass information output by the first rock mass information prediction model; inputting the real-time drilling parameters into a second rock mass information prediction model to obtain continuous second rock mass information output by the second rock mass information prediction model; the first rock mass information prediction model is trained based on noisy drilling parameter samples and first rock mass information labels, and the second rock mass information prediction model is trained based on noisy drilling parameter samples and second rock mass information labels, wherein the noisy drilling parameter samples are obtained by adding noise from different noise sources corresponding to different drilling parameter samples. This invention can accurately predict rock mass information with different value types.

The utility model relates to coal mine transportation technical field discloses a matched transport device of directional drilling machine, including the frame, the bottom rotation of frame is equipped with rear wheel and two front wheels, and brake assembly swing is set between two front wheels, and brake assembly includes brake board, arc toothed plate, connecting rod and swing lever, and one swing lever, a pair of arc toothed plates and a pair of connecting rods are swinged in every front wheel, and brake board fixedly is equipped between two swing levers, and two connecting rods are hinged between arc toothed plate and swing lever, and brake board swing drives swing lever synchronous swing, and through connecting rod, arc toothed plate is driven around the pivot rotation and is engaged brake cylinder ring toothed groove, realizes front wheel lock, and reversely promotes brake board to swing, and linkage arc toothed plate is separated from ring toothed groove, and restores front wheel rotation, and arc toothed plate and brake cylinder's gear engagement type brake, reduce the risk of coasting, no complex electric control element, adapt to coal mine dust, humid environment, make the device be able to adapt complex working condition use.

The application belongs to the technical field of multi-directional drilling equipment, and provides a multi-directional control drilling guide device, which comprises a barrel shell, a base, a center rod, a connecting rod mechanism, an angle adjusting plate, a linear pushing mechanism, a bottom plate, a connecting plate, a sliding inner barrel and a drilling pressure driving mechanism. The application integrates three functions of rotary drilling, multi-directional guide and reciprocating impact, can realize efficient rock breaking and accurate guidance in complex strata, is especially suitable for hard strata and engineering scenes requiring frequent adjustment of drilling direction, is suitable for various scenes such as mine exploitation and oil extraction, can meet the demand of directional drilling in complex strata, and improves the efficiency of exploitation and oil extraction.

This invention relates to the fields of geotechnical engineering and deep earth exploration technology, and discloses an in-situ testing device and method for multi-field coupled parameters of thermal-hydraulic-mechanical systems in ultra-deep high-pressure directional drilling. This method solves the problems of traditional testing methods, such as drill pipe axial force transmission leading to sealing failure, low efficiency of multi-parameter testing, neglect of multi-field coupling in data interpretation, and inability to quantify surrounding rock risks in real time. The testing device of this invention includes a multi-core armored cable, a downhole testing device, and a surface control and computing system. The downhole testing device is a central tube integrated structure, with an electrical control and communication module, upper and lower packers, and a multi-functional testing module integrated sequentially along the central tube. In application, the downhole device is lowered to the target formation, and the packers are hydraulically driven to set and form a sealed isolation section. Water is then injected into the sealed isolation section to induce fracturing, and multi-source data is collected simultaneously. After fracturing, fracture data is collected, and through data inversion and coupling correction, the plastic zone of the borehole wall is calculated and the risk is quantified. Finally, the device is retrieved.

This utility model belongs to the field of directional drilling cleaning technology, specifically a directional drilling hole cleaning device, including a main rod, one end of which is fixedly connected to a conical head, and the other end of which is fixedly connected to a drill bit; a hole cleaning mechanism is fixedly connected to the outer wall of the main rod; the hole cleaning mechanism includes a fixing plate fixedly connected to the outer wall of the main rod; by activating the hydraulic cylinder, the output end of the hydraulic cylinder drives the sliding plate to move upward, which in turn drives the bottom of the connecting rod to move upward. Since the bottom height of the connecting rod is constant, when the bottom end of the connecting rod is rotated under force, the top end of the connecting rod will push the slider to slide outward along the sliding opening, which in turn drives the arc-shaped scraper to move outward; when the drill bit is energized and rotates, it drives the main rod to rotate, which in turn drives the entire hole cleaning mechanism to rotate. At this time, the arc-shaped scraper rotates synchronously with the rotating rod, scraping the soil drilled by the drill bit off the hole wall, facilitating the flushing of drilling fluid and achieving the function of rapid hole cleaning.

This invention relates to the field of oil and gas drilling engineering technology, specifically to a rapid directional drilling method for deep coal and gas horizontal wells based on real-time logging data, comprising: real-time acquisition of multi-source logging data; establishment of the functional relationship between idle friction torque and well depth; real-time calculation of effective rock-breaking torque of the drill bit; and MSE (Mean Separation of Forms). b Model building and real-time calculation; establishment and dynamic correction of lithology identification threshold: using logging and well logging data from adjacent wells, a statistical classification model for lithology identification is established; real-time guidance decision-making and trajectory adjustment: this application realizes real-time lithology identification, formation early warning and working condition judgment, thereby guiding precise adjustment of wellbore trajectory. This solution does not require additional equipment, is adaptable to complex drilling conditions, completely solves the data lag problem, significantly improves reservoir encounter rate and drilling efficiency, reduces operating costs and risks, and provides reliable technical support for the efficient development of deep coal and gas formations.

The utility model discloses a kind of front clamps of all-around directional drilling rig, including front clamp cylinder body, front clamp cylinder body is cylindric structure with cylindrical cavity being arranged in center, and it is provided with cylindrical mounting cavity inside front clamp cylinder body, slip joint is provided with slip piston in mounting cavity, the inner wall of front clamp cylinder body is connected with slip sliding, and slip one side and slip piston sliding abut.This utility model is through setting slip piston and slip, and then by the joint on valve block injects oil into copper sleeve, slip piston is moved by the pressure of oil, and by the mutual cooperation of conical surface, and then slip is moved in radial direction in front clamp cylinder body, constitutes piston type linkage structure, using the incompressibility of oil, pressure can be rapidly and efficiently transmitted to slip piston, this drive mode with oil as medium, compared with traditional mechanical transmission, eliminates transmission gap and energy loss brought by complex mechanical structure.