51results about How to "Meet drilling requirements" patented technology

The invention discloses a rock debris separating method for gas drilling. The rock debris separating method for gas drilling comprises the steps of firstly enabling water in a whole system to circularly flow to achieve balance and beginning to perform gas drilling; mixing gas and solid with the water to form a mixed fluid to enable dust in the solid to be dissolve in the water during drilling and before the gas returned from a well mouth and the solid are separated; enabling the mixed fluid to firstly flow into a primary separation system to remove coarse particles, discharging the gas carried with fine particles, water drops or water mist into a secondary separation system; removing the fine particles, water drops or water mist so as to obtain purified gas and a solid-liquid mixture after water bath washing is performed; delivering the solid-liquid mixture to a circulating water treatment system, and separating the coarse particles through primary treatment separation; removing the fine particles through secondary treatment separation; removing fine particles through tertiary treatment separation. The rock debris separating method for gas drilling can achieve returned fluid treatment under the condition that a grit chamber does not exist through gas drilling, gas meeting the direct emission standard is finally obtained, and the gas drilling requirement under different conditions can be met.

The invention relates to water-based drilling fluid for a shale horizontal well. The water-based drilling fluid comprises a reverse wetting agent. The invention further relates to a preparation method of the water-based drilling fluid.

The invention discloses a determination method of a spindle space and a drilling mode of multi-spindle numerical control sieve plate drilling equipment. The method is characterized by comprising the following steps: 1, defining known parameters: drilling region width range W, adjacent hole maximum space Xm, spindle external diameter D and adjacent spindle minimum gap Y; 2, trialing and determining large-step drilling frequency N and adjacent spindle space L, wherein the formula is N=(2W+Xm) / 2ML(1)L>D+Y(2); solving the large-step drilling frequency N and adjacent spindle gap L according to the equation (1) and the inequality (2), wherein N is rounded off to be an integer, L is the minimum value of the inequality; 3, determining small-step drilling frequency n in each big step and final hole space X, wherein the formula is L=nX(3); X is less than or equal to Xm; (4) trialing according to the equation and the inequality and solving the small-step drilling frequency n in each big step and the finally determined drilling space X, wherein n is decimal which is rounded off to be an integer; X is the maximum value meeting the inequality.

The invention relates to the technical field of drilling machines, in particular to a small multi-function drilling machine. The small multi-function drilling machine comprises a base, a mast and a power device are arranged on the base, a pedestal is arranged at the bottom of the power device, and a power head is arranged at the bottom of the pedestal. A clamping device is arranged at the bottom of the power head and comprises a clamping head, a plurality of first grooves are formed in the clamping head, and a second annular groove is formed in the outside of the clamping head. Inserting rods are arranged between the second annular groove and the first grooves in a communicating mode, clamping blocks matched with the first grooves are arranged in the first grooves, and the inserting rods are arranged on the backs of the clamping blocks and penetrate through inserting holes. Lantern rings are arranged at the ends of the inserting rods in a wedge-shaped matched mode, the contacting faces of the inserting rods and the lantern rings are matched in a threaded mode, and the lantern rings are arranged in the second annular groove in a sleeved mode. The inserting rods are sleeved with springs, one ends of the springs are connected with the clamping head, the other ends of the springs are connected with the bottoms of the first grooves, and a drill bit is arranged in the clamping head in an inserting mode. According to the small multi-function drilling machine, requirements of countryside well drilling are met, the clamping effect is good, and an anti-dust device is additionally arranged for avoiding flying dust.

The invention discloses a large mining height gas extracting caterpillar drill for a coal mine gallery. The large mining height gas extracting caterpillar drill at least comprises a body and a shift drilling device, wherein the body comprises a caterpillar body; two sides of the lower end of the caterpillar body are respectively provided with a caterpillar assembly; the shift drilling device is arranged at the front end of the caterpillar body and comprises a vehicle body connecting plate, a tail end connecting plate, a telescopic amplitude changing device, an orientation adjusting device, a dip angle adjusting device and a feeding device; one end of the telescopic amplitude changing device is connected to the vehicle body connecting plate, and the other end of the telescopic amplitude changing device is connected to the tail end connecting plate; the telescopic amplitude changing device ensures that the tail end connecting plate integrally parallelly moves in a plane relative to the vehicle body connecting plate; therefore, the large mining height gas extracting caterpillar drill is wide in drilling height range, and has the characteristic of wide range for adjusting the height of a center hole of the drill; in crossheading construction for a working face in tunneling, a construction range is wide, the whole working face can be involved, and the drill has obvious advantages in large mining height gas extraction drilling.

The invention discloses a sample delivery device for drum brake pad production, which comprises a fixed support, a sample delivery beam, a sample delivery truss and a sample delivery mechanism, the sample delivery beam is installed on the fixed support, and the sample delivery truss is open up and down Cuboid structure, installed on the sample delivery beam, the sample delivery mechanism is movably installed on the sample delivery beam, and passes through the sample delivery truss, and moves along the length direction of the sample delivery beam. The sample delivery mechanism includes a translational servo component, a vertical servo component, The rotating assembly, the brake pad clamping assembly and the sample feeding pole; when in use, the rotating assembly rotates with the lower part holding the brake pad, and the brake can be applied according to the drilling position and the position of the drilling machine when the drilling machine is drilling. Adjust the orientation of the pad to meet the drilling requirements; at the same time, use the brake pad clamping assembly to clamp and fix the brake pad, which is convenient for drilling and material transportation. It has a reasonable structure design, easy to use, and easy to process the brake pad And the characteristics of sample delivery.