How to get the pump out of the hole if he's stuck: the best methods to pull the pump out

You are faced with the problem of jamming of downhole equipment in the trunk and the impossibility of taking it to the surface? Agree, not bad to get him out on their own, restoring uninterrupted water supply, and save at the same time to exit the expert. But you do not know how to get the pump out of the well without damaging it?

We'll show you how you can cope with this task - in the article describes the most common causes of jamming the pump and extraction methods. Given videorekomendatsii professionals and reviewed the equipment used at the same time.

The article also selected photographs showing ways of extricating the submersible pump which is operated in deep water. These recommendations will help to deal with the problem, if the reason for which the unit is stuck, the type and condition of the casing permit.

When the pump is stuck?

In most cases, well owners have problems with extraction pumping equipmentThat particular time already served for a generation.

The rise of a deep well pump is needed in the following cases:

• for repairs;
• Maintenance;
• replaced by a more powerful or a new pump;
• replacing the flushing pump at a constant.

Much less pump jammed in the barrel when trying to lower it to the bottom of the well. Causes jam in this case is usually a mismatch of the pump size and diameter of the casing or entering of a foreign object into the column, which prevents the descent of the unit.

These two reasons easy to handle: the size and model of pump selected before the start of the descent, and got into the casing a foreign object is removed or pushed down.

In order to prevent jamming of the pump during the descent it is necessary to observe safety measures: carefully examine the unit and make sure that all parts are correct, to avoid falling into the pipe of foreign objects (stones, tools, packaging), use and reliable cable collars.

Causes of jams and their removal

The problems associated with jamming pump typically occur when it is being raised from the well to the surface.

The most common conditions for which the equipment can get stuck in the barrel:

• slack rope (cable);
• silting of wells "on the sand";
• deposits in the well "on the limestone";
• damage to the walls of the casing;
• penetration of foreign objects into the pipe;
• twisted inside the pump casing;
• broken cable.

If you are stuck in the pump aquifer wells, Then it's the right decision - to call professionals who have the experience and necessary equipment to safely remove the unit.

But in some cases you can try to get the pump yourself, identify and eliminate the cause of its jams. Consider the causes and eliminate them in more detail.

Reason # 1 - slack cable when lifting

In the event of slack rope or an electric cable used for lifting the pump assembly is pulled up gradually getting worse and worse, and at some point all stops. This is because a loose cable or electrical cable wrapped itself around the pump housing.

The algorithm for the pump action pullout stuck slack cable or rope:

1. Lower the pump to the bottom and carefully align the loop formed slowly swinging rope in different directions and pulling it up.
2. If only used for lifting the rope, do not forget that the pump is equipped with electrical cable and hose as, which must be synchronized with each other, to avoid sagging of one of the elements and formation loops.
3. Secure all three elements with clamps. Fixing should be implemented every 1-1.5 meters.
4. Slowly and carefully lift the pump.

Is the most common and easily solvable problem. Prevent sagging of the cable is very easy to do when running the pump in the well must be to carry out his garter in the casing every 2-3 meters, so it was always a slight tension.

Reason # 2 - silting of wells "on the sand"

Silting wells with sandy bottom is due to infrequent or irregular operation. In this case, the pump is in the clay "trapped" and can get it by alternately tightening and loosening the rope, while slowly rocking unit in different directions. Thus, it is possible to release the equipment from the silt.

The unused yl workings can harden because before removing unit must first erode deposits. For this taken fire hose or a hose through which the water is fed to the bottom of the well.

Maceration of sludge deposits can take anywhere from 2 to 48 hours. To check whether the pump is released from the sludge, it is necessary to periodically attempt to raise, swinging from side to side. If the device does not give in, you should not exert excessive force, even if the sludge maceration continues.

overgrown mud pump problem occurs if the well has not been cleaned for years. Annual Preventive cleaning and waterworks downhole filter completely eliminates the problem of siltation, and thus jam the equipment.

Reason # 3 - limestone deposits in the wellbore

Water extracted water wells from fractured limestone, it contains many salts and metals, which, coming into contact with oxygen, form a solid precipitate. This precipitate can be seen on the walls of the casing.

Exactly the same deposits accumulate on the pumping equipment housing, forming salt buildup layer which can be up to 5 cm. It is understandable that when the pump is lifting its increase due to the size of deposits will not allow it to pass through the casing.

In this case, there are three ways to solve the problem:

1. Rinse wells with water. It is sent to the high pressure shaft. This method is good when the fat a little, and they lend themselves to erosion. In this case, since the high-pressure pump erosion rises upward by means of a cable or cable.
2. The use of "popular" anti-limescale. Instead, special powders taken citric or acetic acid, diluted with water and poured in the target borehole. Under the action of an acid salt deposits break. This method is only on the pump, which is not planned further operation can be used, as acid can damage its internal mechanisms.
3. Use of chemical weapons. To do this, perfectly suited descaling agents for washing machines and dishwashers, kettles. The powder to be dissolved in hot water according to the manufacturer's instructions and pour the resulting solution into the well. To improve the effectiveness of anti-scale is recommended to enable the pump (if working), so that the water was set in motion.

The disadvantage of the latter method is its high cost: You need at least 20 packs of descaling agents, and in some cases it is necessary to repeat the procedure 2-3 times.

Cause # 4 - damage the casing wall

When lifting the pump can cause it to jam due to mechanical damage casing.

These injuries include:

• a dent in the casing;
• tapered region of the pipe;
• rough welds;
• displacement of welded parts, etc.

Characteristic symptoms indicating that an obstacle to the movement of the pump-up has been damage pipe is thud and wedging unit which is moved to this point of the alignment without problems.

In this situation, can help a small change in position of the pump, it is necessary to tilt and rotate slowly while lifting up. Please note that it is necessary to tilt the "little", or you take a chance to break the rope, dropping the unit into the well.

It is not necessary to apply excessive force in an attempt to push the pump through the difficult part, it will lead to a complete seizure of the unit inside the well. Practice shows that at small deformations of the casing and the small dimensions of the pump, this method helps in most cases.

If the device size is slightly smaller than the cross section of the casing string or damage significant, then get yourself the pump does not work, but can not do it in some cases, specialists.

To prevent jams due to the equipment casing deformation necessary to produce quality installation of casings in compliance with all technological standards and to select the correct unit for dimensions.

Reason # 5 - foreign objects

The most unpleasant and dangerous situation, which, however, is very easy to prevent. Most often fall into the casing tools, fastening elements, debris, scraps of plastic bottles. To escape this, you need to carefully prepare for the lifting of the pump by removing all unnecessary in the working area.

If a foreign object still fell into the tube and prevents the lifting equipment, the following steps can be taken:

1. Carefully and slowly, without effort, shake the pump from side to side if possible - small object can slip into the hole, clearing the way the unit.
2. If the stroke of the pump-up is not possible, and the unit goes down without problems, it is necessary to slightly lower the pump and try to get the fallen object using a net, hook or rope with a noose.
3. In some cases, you can try to push the fallen object using a rigid cable or scrap. It should be done very carefully, because there is a great risk of breakage of the lifting rope and the pump casing damage. Use excessive force in this case should not be.

If these measures were not enough, and the pump is completely stuck in the hole due to falling between his body and the walls of the casing of a foreign object, it is necessary to stop trying to solve the problem.

You should call a team of experts who will carry out the removal of obstacles and raise the pump to the surface without damaging it.

Cause No. 6 - pump skewed within the tube

Causes pump skew may be slack in the cable, sharp jerk hoisting rope lifting unit using the electric cable, etc. The presence skewing show the following signs: Pump up without problems, but at a certain point rise slowed and stopped, and the punch absent.

In no case do not need to continue to pull the device out of the well, as this will lead to even greater distortions and jamming! The only solution - to ease the tension of the rope and lower the pump, try to return it to its original position.

To do this, you need to rotate the lifting rope, gradually pulling up the pump, if the unit is stuck again, you can try to rotate the rope to the other side. When the lift is made by means of a cable and electric cable, the successively manipulating them quite easy to return the instrument to the desired position.

All this is useful if the pump runs freely in the well up to a point and falls down without any problems. If the unit is stuck in the well and has no freewheel, it is necessary to call the professionals who will extract the device with the help of special tools, without damaging the pump and the well.

Reason # 7 - open lifting cable

Open hoisting cable - the most complex case in which the pump falls to the bottom of the well or is stuck in the casing. First aid in case of interruption of a cable is to stabilize the unit.

For this purpose, a hose and electric cable. If the pump has a small size and weight, then with the help of cables and hoses can be gently pulled to the surface, despite the fact that these items are not designed for this. However, after the application of this method often have to pump replacement a new unit.

If the pump is heavy, then pull the power cable can not be, that's for sure lead to its breakage. In this case, we must act quickly: take a thick rope tied to it with a metal hook.

Then gently lower the rope, trying to catch the hook the pump and pull it upward. Hose and electrical cable used for secure and align the device during ascent.

When the rope broke off suddenly, and fell into the well pump with a hose and electric cable, then you can try it yourself to get by using the following method:

1. Take a metal rod of such length that it took up to a fallen / stuck unit.
2. On the twig fasten special nozzle in the form of a corkscrew. To produce such a nozzle can be twisted smith turner-milling or as a nozzle may be any suitable element ready. It is important that the diameter of the turns nozzle be such that the rod passed freely through the casing.
3. The nozzle is attached to the rod at the other end of which is put on a metal rod, making it possible to provide a rotation of the structure.
4. Omit the rod with the nozzle in the hole and is screwed by means of rod "spin" in the pump housing. Raise the unit with ragged cable and hose.

This is a rather complex and unwieldy method suitable only for shallow wells. Naturally the further use of the equipment, raised such a "corkscrew" is impossible. To retrieve a dropped pump so as not to harm him, on their own can not, and professional services in this case could cost you dearly.

If you raise the submersible pump to the surface in any way possible, then release the two:

• conservation of the well and the drilling of the new;
• crushing pump portion special drill installing and recovering it in parts.

What a way to choose? In each case, the well owner himself decides, taking into account many factors. It happens that a well worn out or its operation is inconvenient for any reason, then the easier and faster to drill a new one.

General guidelines for safe lifting

Jam submersible pump is easier to prevent than to correct the problem.

This requires to follow a few simple guidelines:

1. Use a reliable, durable and hard wire. Cable, came with a submersible pump, often do not meet these requirements. Do not skimp, buy a high-quality cable and fastening elements (clips) to it made of "stainless steel".
2. Do not use a hose of several pieces. If the hose provided with the pump is not long enough, do not renew it, it is better to buy a new one piece. This will reduce the risk of breakage and will serve as extra insurance in case of interruption of the cable.
3. Pick up the correct pump in size. It should be less than 2/3 of the diameter of the casing. Thus, the risk of jamming the machine greatly reduced even when the tube deformation or falling into the borehole obstructions.
4. Be sure to set the headroom. It will protect the well from falling debris and various objects.

And remember: Using the methods described above, in any case, do not use brute force, trying to pull the unit to the surface. This will lead to the aggravation of the problem: the pump even more densely stuck inside the trunk, the cable can be stopped and the wall and the casing is deformed.

Conclusions and useful videos on the topic

Video # 1. How to get the pump if it is stuck in the hole and how to prevent jams:

Video # 2. Recovering a jammed pump on its own in the following video:

Stuck in the borehole submersible pump - a serious problem that requires immediate solutions. In this case, as elsewhere, the rule "do no harm", so when trying to remove the equipment failed, the best solution is to call experts.

Be sure to observe the installation and operating instructions well, spend it cleaning on time and then you will never run into similar problems.

We are looking forward to your stories about how you yourself removed the jammed pump from the wellbore. Perhaps you have in the arsenal of a more efficient method or have any questions. Please write comments in the box located below.