06-28

DTH Drill Pipe Introduction Definition and Hazards of Well Leakage

Well leakage refers to the oil, natural gas, coal, gas layer, rock salt, metal ore, geothermal, frozen wells, pile foundation, combustible ice and other submersible drill pipe drilling process, mud leakage into the formation of a phenomenon. If the mud tank or mud level drops abnormally, the return mud at the wellhead decreases or does not return mud, and the mud level in the well drops, it means that leakage occurs in the well.

06-29

How can rock cuttings be precipitated quickly under the analysis of water well drill pipe?

Rock cuttings precipitation is very important. To accelerate the rate of rock cuttings precipitation on the ground, the water well drill pipe should start from the following aspects:

06-30

Definition and function of bentonite under the interpretation of friction welding drill pipe

Bentonite is formed by weathering and deposition of silicic minerals (such as feldspar) in magmatic or metamorphic rocks. Its composition is:

07-03

DTH drill pipe introduces the definition of sticking drill pipe and how to prevent it?

Only the down-the-hole drill pipe in the static state will occur, fast for a few minutes, that is, the occurrence of adhesion stuck drill. The stuck points are located at the drill collar or drill pipe joint because of their large contact area with the borehole wall. Before and after the occurrence of sticking, the pump pressure is the same as that of the return slurry at the wellhead. After sticking occurs, the stuck point will gradually move up until it is near the casing shoe.

07-07

What are the prediction methods of geological drill pipe for sand bridge sticking?

In stable formations, when using solid-free drilling fluid, thick slurry with a viscosity of 80s and a 20m funnel shall be prepared in the morning and evening with sand once each.

07-13

What are the roles and uses of mud pumps in the well drilling process?

In the drilling process, the mud pump is a machine that delivers mud or water to the borehole. It is an important part of drilling machinery and equipment.

07-17

What are the main functions of water well drill pipe and drilling fluid in the work?

The main function of drilling fluid in the drilling process of water well drill pipe is to carry the cuttings from the bottom of the well to the ground. The role of drilling fluid What's there?

07-21

What are the methods of underground water source mining under the explanation of the outer flat drill pipe?

Groundwater is the water stored in the underground porous layer, that is, the aquifer. It is one of the more reliable water sources. When drilling a well, the outer drill pipe explains how the underground water source is mined?

07-23

Analysis of oil dripping mode of down-the-hole drill pipe to drilling machine is as follows:

The lubrication methods of the drilling machine by the down-the-hole drill pipe can be divided into: artificial dripping oil, oil pump pumping oil, closed oil bath, oil gun and oil standard pressure dripping oil, etc. Artificial oil dripping is the most complicated lubrication method. The lifting sprocket chain, moving pulley, roller shaft galvanized steel wire rope, transmission chain, vertical transmission gear, ropeway, etc. of the drilling machine all use artificial oil dripping. In the drip oil must pay attention to the following:

07-28

Geological drill pipe tells the method of well washing and dredging

The reasons for the formation of silt wells include sand in the water layer, excessive strainer holes, and well wall damage. All these will cause sediment deposition and blockage in the lower part of the well, block part of the screen pipe, and affect the water outlet of the well.

07-30

How to prevent the inclined hole from the outer flat drill pipe when working?

The site shall be leveled and compacted, the foundation pad shall be horizontal, the drilling rig shall be firmly installed, and the three points of the crane, square hole and wellhead center shall be on a vertical line.

08-03

What are the eight major drilling systems under the introduction of down-the-hole drill pipe?

Eight systems for drilling operations: (lifting system, rotating system, drilling fluid circulation system, transmission system, control system, power drive system, rig substructure, rig auxiliary equipment system)

08-05

Geological drill pipe teaches everyone how to judge where there is groundwater?

Geological drill pipe is based on an important principle of "back and syncline". Faults are generally difficult to take water, the fault surface is fragile and cracked, water will seep down, naturally, no matter how to drill a well, it will not gush up. The "anticline" is "convex" in shape, and the rock in the middle is hard and higher than the average thickness. It is futile to dig a well in such a place.

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