The solution to the leakage in drilling and exploration, and how to solve the leakage found in the d

If the hole is too big, the possibility of plugging it is very small, there is a kind of thing called 141, which is specially used to plug this, which can increase the viscosity of the water.

Summary. The eldest brother upstairs is very professional, he is learning drilling, and the younger brother has an axe in this class.

The water gushing in the well can only strengthen the maintenance of the hole wall

Method 1: Grouting After the bridge is built, use clay or cement mud to plug the leakage, and if conditions permit, chemical agents can be used (which material to use depends on the lithology, water inflow, economic cost and other factors). Wait for the mud to dry before reaming, and you can continue to drill after you are done.

Method 2: Lower the cannula. Cover the hole wall with a casing of appropriate caliber and continue drilling with chemicals (suitable for deep holes when water incursion caused by structural fracture zones).

As for the collapse of the buried drill, it can only depend on the circumstances of the accident:

If the situation is not serious, it can be cone up in the usual way of dealing with accidents; If the accident is serious and cannot be lifted, only a jack can be used.

During the drilling process, there is a water inrush in the well, how to deal with it to block the water inflow.

The eldest brother upstairs is very professional, he is learning drilling, and the younger brother has an axe in this class. The water gushing in the well can only strengthen the maintenance of the hole wall: method 1:

Grouting. After the bridge is built, use clay or cement mud to plug the leakage, and if conditions permit, chemical agents can be used (which material to use depends on the lithology, water inflow, economic cost and other factors). Wait for the mud to dry before reaming, and you can continue to drill after you are done.

Method 2: Lower the cannula. After protecting the hole wall with a casing of appropriate diameter, it is supplemented by chemicals to continue drilling (the cracking pin is suitable for deep holes when the water inrush caused by the structural fracture zone) is completed.

As for the collapse buried drill, it can only depend on the circumstances of the accident: if the situation is not serious, it can be cone up by the conventional method of dealing with the accident; If the accident is serious and cannot be lifted, only a jack can be used.

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Summary. Hello dear, happy to answer your <>

Regarding the leakage found in drilling construction, the first thing should be to adjust the performance of the drilling fluid, reduce the pressure difference and plug the void of the rock formation, and then you can drill normally. Secondly, if there is a fracture leakage in the oil and gas layer, the fracture can be plugged by injecting lime emulsion drilling fluid. If it is a cave type leakage.

Then it is necessary to often take the method of directly putting stones and mud balls from the wellhead to plug, or injecting cement to plug it.

How to solve the leakage found in the drilling construction.

Hello dear, happy to answer your <>

Regarding the leakage found in drilling construction, the first thing should be through the method of adjusting the performance of the drilling fluid, reducing the pressure difference and plugging the voids of the rock formation. Secondly, if the fracture leakage occurs in the oil and gas layer, the fracture can be plugged by injecting lime emulsion drilling fluid. If it is a cave type leakage.

Then it is necessary to often take the method of directly putting stones and mud balls from the wellhead to plug, or injecting cement to plug it.

In addition to causing problems such as prolonging drilling time, blowouts and well collapses, the leakage of wells will also cause serious damage to the production layer. Therefore, it is very important to find out the cause of the well leakage in time and solve it effectively.

How to deal with well leakage during drilling: determine a reasonable mud density, and comprehensively determine the formation pore pressure and lateral pressure according to the gushing, leakage, sand return, torque, digging fiber suspension weight, and gas measurement value during the drilling process, so as to adjust the mud density in a timely manner, and prevent the well gushing and leakage that may occur when the mud density of real drilling is significantly different from the formation pressure; 2. Insist on sitting on guard to observe the mud outlet, pay attention to measuring the liquid level of the mud tank, and ensure that the mud tank monitor is sensitive and accurate, and find the well leakage in time; 3. The driller should pay attention to the pump opening method, especially when drilling to the end, the mud has a long static time and a large shear force. First single pump, then double pump.

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What to do if there is serious layer leakage during the drilling process 1. Clean up the bottom of the elevator shaft and the surrounding area to a height of one meter, and require no clear water, no dust, no oil and other miscellaneous wild locust substances. 2. Use various methods to find out the leakage point. and carry out blocking treatment.

Use the bottom of the elevator shaft and the surrounding area to level. 3. Fill the water pipe in the place where there are several kinds of leakage water, and drain the water around the well wall. 4. When the stagnant water of the well wall is finished, the method of mechanical grouting is used to make the loose concrete structure around the well wall dense, so as to prevent groundwater intrusion and prevent leakage and seepage.

5. Brush the waterproof paint in one piece, and repeatedly brush the spine many times to achieve the required thickness, which can play a good role in preventing leakage and seepage.

Regarding the leakage of water in the geological exploration hole, what is the best way to plug the leak?

About the geological exploration hole buried is now leaking, all leakage bend the shed, what is the best way to plug the leakage: pro About the geological exploration hole leakage, full leakage, with a large amount of grass, leaves, etc. to plug the leakage is best as follows You see that when the leakage is not particularly serious, use a large amount of grass, leaves, etc., chop up the mixed mud (the concentration of mud depends on the leakage) into the hole, and then drill and sweep the hole. If the leakage is particularly serious, seal the hole with cement and re-drill it after the cement is dry.

When there is a large flood peak in the river during the flood season, because there are caves caused by the activities of small animals (ants or rats, etc.) on the dam, or the pores and cracks left by the construction of the dam, it is very easy for the dam to have water seepage, pipe surge, collapse, embankment failure and other accidents, so there is an aphorism that "the embankment of a thousand miles is destroyed in the anthill". In the process of drilling construction, due to the existence of pores, cracks or karst caves in the rock of the underground formation, the drilling fluid has the conditions for flow and passage in the underground formation. When the pore pressure of the downhole formation is less than the pressure of the drilling fluid column, the drilling fluid will enter the formation and leak under the action of positive pressure difference. When the formation rupture pressure is less than the column pressure of the drilling fluid, the formation will be fractured and there will be greater leakage.

The causes of well leakage in drilling include natural factors and human factors, and permeability leakage and leakage of natural fractures and karst caves are natural factors. However, the leakage caused by improper drilling construction measures, such as too high drilling fluid density, too fast drilling, and too violent pumping, is a human factor. In addition, when drilling adjustment wells and infill wells in old oilfields, the pressure of the production layer decreases due to the long-term exploitation of the oilfield, and the formation is further broken after fracturing operations, and well leakage is more likely to occur when drilling encounters these formations. When drilling well leakage, the main display of the scene is that the amount of liquid returned from the drilling wellhead is less than the amount pumped, and the wellhead can not return mud at all when it is serious, and after the well leakage occurs, the site should take different methods to deal with it according to the situation of the well leakage.

Wells with complex downhole pressure systems and formations can only be treated by plugging leaks; And for downhole pressure systems single.

1. Wells with high formation structure strength can be treated by reducing the density of drilling fluid. In general, prevention should be given to the prevention of well leakage at the drilling site, and well leakage due to human error should be avoided as much as possible. Before the drilling construction, the leakage data should be collected as much as possible, and in the drilling process, all the work that can prevent the leakage should be done as far as possible in advance.

Well leakage will cause the drilling work to stop or interrupt, and serious leakage will delay the production time for a long time, consuming a lot of manpower, material and financial resources. If the drilling leakage is not dealt with in time, it will also lead to drilling well collapse, blowout and stuck drilling accidents, so the prevention and timely treatment of well leakage is a very important work in the drilling process.

Schematic diagram of drilling well leakage.