JP5013147B1 - Collective well pipe - Google Patents

Abstract

PROBLEM TO BE SOLVED To obtain a well that can be operated for many years by efficiently cleaning the amount of pumping of a well pipe that pumps steam, hot water, and water from underground. It is.
SOLUTION: Several pipes 2 provided with a large number of linear inflow gaps 3 are bundled to form a collective well pipe 1, and a pumping operation is performed. Pressure water is fed into the pipe and the gap 3 between the inflow of this pipe and the surrounding gravel layer 4 is rapidly passed, thereby sweeping the deposit adhering to the pipe 2-2 on both sides, Through the inflow gap 3 of 2-3, it is fed into the pipe and pushed back to the ground, and this washing operation is performed on the other pipes to restore the flow rate of all pipes, that is, the collecting pipes.
[Selection] Figure 2

Description

  The present invention relates to the field of wells for taking out steam, hot water and water that are liable to adhere foreign matter to the inner surface of the pipe.

  Over a long period of time, steam, hot water, and water are pumped from the ground through the underground, and deposits accumulate on the linear inflow gap of the pipe of the well pipe and the surrounding gravel surface, reducing the pumping volume. However, this phenomenon is a state in which the operation of geothermal power generation wells is extremely concerned for many years.

  When steam, hot water, and water are pumped from the underground, the pumping volume of the well pipe decreases year by year, especially in the steam and hot water wells, compounds such as sulfur and arsenic, oxides are in the clearance gap and the surrounding area. The present invention intends to obtain a well that can be operated for many years by cleaning it, which is deposited on the surface of gravel and significantly shortens the life of the well.

  The present invention is a structure of a well pipe for pumping steam, hot water, water, etc. from the ground, and a pipe 2 having a large number of linear inflow gaps 3 for pumping them in the pipe body. A number of pipes 1, 2-2, 2-3, etc. are combined to form a collective well pipe 1 to perform the pumping operation, and in order to cope with a decrease in flow rate due to long-term use, one pipe among them The pressure water is fed into 2-1, and the inflow gap 3 and the gravel 4 are rapidly passed through the inflow gap 3 and the surrounding gravel layer 4 in this pipe in a direction opposite to the flow during pumping. The sediment adhering to the surface of the pipe is swept away and sent into the pipe through the inflow gap 3 between the pipes 2-2 and 2-3 on both sides, part of which is pushed back to the ground, and part is The bottoms of the tubes 2-2 and 2-3 are deposited, and this cleaning operation is sequentially performed on the remaining tubes 2-2, 2-3, etc. The structure of the set-well tube so as to restore the flow rate of the tube 1.

  By using the collective well pipe of the present invention, pumping from the well and periodically performing the cleaning operation, the life of the well can be greatly extended.

As an example of an embodiment of the present invention, a side view of a collective well tube in which two tubes are bundled AA sectional view of FIG. As an example of an embodiment of the present invention, a side view of a collective well pipe with a guide rod attached BB sectional view of FIG. Side view of conventional well pipe CC sectional view of FIG.

間に満たされる砂利４の量は集合型井戸管１の場合は、隣り合った管の間の三角形の空間が追加されるため、より多くの砂利４を収納することが可能である、従ってより多量の蒸気、熱水、及び水を汲上げることが可能になる。The present invention is a structure of a well pipe for pumping hot water and water from the ground, and pipes 2-1 and 2 provided with a number of linear inflow gaps 3 for pumping them in the pipe body. -2, 2-3, etc. are bundled to form a collective well 1.
FIGS. 1 and 2 show a collective well 1 formed by joining three pipes 2-1, 2-2 and 2-3 by welding or the like. Each pipe has nine wires. 5 and FIG. 6 show a well pipe 8 having the same diameter as the outer shape of the well pipe 8 having three diameters. Since there are 24 inflow gaps provided at the same interval,

In the case of the collective well pipe 1, the amount of gravel 4 filled in between can add more gravel 4 since a triangular space between adjacent pipes is added. A large amount of steam, hot water, and water can be pumped.

  In order to cope with a decrease in the flow rate due to long-term use, pressure water is fed into one of the pipes 2-1 to pump up the inflow gap 3 of this pipe and the surrounding gravel layer 4 during pumping. By rapidly passing in the direction opposite to the flow, the deposits containing iron, silicon, sulfur, arsenic, etc. adhering to the surfaces of the inflow gap 3 and gravel 4 are peeled off and pushed in the direction of the arrow in FIG. And flow into the pipe through the inflow gap 3 between the adjacent pipes 2-2 and 2-3, a part of which is pushed back to the ground, and a part is the bottom of the adjacent pipes 2-2 and 2-3. It is possible to restore the flow rate of all the pipes, that is, the collective well pipe, by sequentially performing the cleaning operation on the remaining pipes 2-2 and 2-3.

  When several long rods 6 are attached to the outside of the collective well pipe 1 with the arms 7 and suspended in the well bored, it is lowered along the well wall 5 to the center of the well bore. This is a necessary condition for enhancing the pumping capacity of the well pipe.

DESCRIPTION OF SYMBOLS 1 ... Collective type well pipe 2-1, ... pipe 2-2, ... pipe 2-3, ... pipe 3 ... clearance gap 4 ... gravel 5 ... well wall 6 ... 橇 7 ... Attachment arm 8 for the rod ... Conventional well pipe

Claims (2)

  In the structure of a well pipe for pumping steam, hot water, water, etc. from the ground, pipes 2-1 and 2- provided with a large number of linear inflow gaps 3 for pumping them in the pipe body Two, 2-3, etc. are bundled together to form a collective well pipe 1 to perform the pumping operation, and in order to cope with a decrease in flow rate due to long-term use, one pipe 2-1 among them The surface of the inflow gap 3 and the gravel 4 is rapidly passed through the inflow gap 3 of the pipe and the surrounding gravel layer 4 in the direction opposite to the flow for pumping. The deposit adhering to the pipe is swept away, sent into the pipe through the inflow gap 3 between the adjacent pipes 2-2 and 2-3, a part of which is pushed back to the ground, and a part of the pipe 2-2 is adjoined. And 2-3, and this cleaning operation is sequentially performed on the remaining pipes 2-2 and 2-3, etc. Structure of the set-well tube, characterized by restoring the flow rate of the tube 1.   When several long eaves 6 are attached to the outside of the collective well pipe and suspended in the well bored, the gravel layer 4 around the gravel layer 4 is lowered by being lowered along the well wall 5 to the center of the well bore. 2. The collective well pipe structure according to claim 1, wherein the structure is arranged uniformly.

Images