SA05260372B1 - Stop- sand liner hanger assembly for water wells - Google Patents

Abstract

Abstract: A gravel packing device, specially designed for water wells, where the device generally consists of a vertical cemented casing (1) and a stop-sand liner hanger (2). The aforementioned casing (1) ignites on three elliptical balls (13) placed on the inner surface of the casing (1) at the same level of depth adjacent to the bottom. It includes a stop-sand liner hanger (2), comprises a gravel ports pipe (12), and a gravel packing tool (11), around which an upper outer insulating ring (4) is fixed at the upper end. Below which two rubber packers (6, 8) are easily adjusted between a protection ring (5) at the top and a lever ring (9) at the bottom. The aforementioned rubber packers (6, 8) are pressed by the push-up ring (9) resting on the triple elliptical balls (13) when the said push-up ring (9) slides over the pipe leading to the tool. Preparation of gravel packing (11) opposite to the downward movement of the weight of screens/liners (16, 14). This pressure is relieved from the outer diameter of the rubber packers (6, 8), isolating the annulus (3) between the cemented casing (1) and the stop-sand liner hanger.,

Description

STOP-SAND LINER HANGER ASSEMBLY FOR WATER WELLS Full description Background of the invention: - The present invention relates to the installation of gravel packing in water wells and on (ad) The present invention relates to the position of gravel through a stop-sand liner hanger (SSLH) © the invention contains a simple fluidized mechanism operated by erecting a stop-sand liner hanger stated in cemented casing 48; Cua gravel outlets are open when the gravel making machine is installed through which gravel and water are pumped into a subterranean aquifer (aquifer or aquifer) - rings between screens/linings. /liners The (standard) commercial efficiency of the used liner suspension tool isolation fillings 1 was often unsatisfactory gravel packing sda gravel for installing water wells in water wells due to the difficulty of proper installation, which leads in most cases The maximum extent leads to the loss of the well itself. The prevailing reasons for those weak capabilities are due to the always complex internal system of opening and closing based on improper leaky fluid annulus gravel outlets as well as rings.

Vo Jie rubber inserts. In addition (dd) such systems usually require the intervention of skilled engineers to install the device.

And to complete the gravel packing work for the water wells, La, water wells

long as it cannot be completed in one round. And in fact; The distribution of gravel in

The annulus annulus could not be distributed properly; Leaving gaps in the annulus rings

00 and usually; The gravel installation setting must be removed and placed again in the first location or over

Ly because the tools used to remove these “gravel packing” once before completing the gravel filling voids require a corridor entry passage for the barriers. Multiple areas in gravel packing and systems capable of completing gravel filling in one round; Which reduces the time spent on drilling equipment by eliminating the need to operate additional other equipment between each pumping operation; recognized in the previous fields.‎ (Jl) In any case; These systems are very expensive and usually aim at oil production, uh, production. Moreover; Most of the previous field systems require that the gravel packing be removed, leaving behind a gravel packing after completing the well Jill isolation from gravel barrier only as described in US Patent No. 47719777. It is done after 0: to prevent transfer gravel packing This is the preparation of a fluid liner for the sealant to bond with an opening to the top of the well rings. gravel packing gravel packing il) This additional step; Which are required by the structures of these systems to complete in wasting time. US Patent No. 1,774,467 states; A device that does not require the removal of Vo fillings because it includes an internal device that is inflated by fluid pressure; gravel packers; a reflective box for flexibility. any way; The complexity of this system means a high cost of production These systems (Jie) skilled engineers to install and maintain in addition to the necessity of the presence of engineers Ensures consistent and safe setting through a mechanism that avoids the errors that occur in conventional systems and from the removal and removal of the sale setting machine. Reduction of set-up time required for complex installations cg AT side [8:876] pack of gravel while gravel filling is completed ,

P. This objective is achieved through a device as shown in Claim 1. Such a device includes a SSLH suspension liner that is prepared inside the cemented casing by means of three elliptical balls fixed At 0.71 degrees from each other and at the same depth as the inner surface of the casing © near the bottom of the casing the SSLH suspension device includes a gravel port tube; a guide tube for the gravel setter to which an upper outer isolating ring is fixed at the upper end; Below the aforementioned buffer ring, rubber packers are adjusted between a protection ring for an upper rubber filler lever ring. The rubber packer is pressed as soon as the lifting ring settles 0 back push-up on the AD elliptical balls, where the aforementioned balls cause a relative upward movement of the lifting ring on the pipe directed to the gravel preparation tool, which is Pulled down by the weight of the SSLH suspension liners and bottom liners/baffles. The pressure of the insulating rubber packers increases the outer sealing diameter of the rings between the cemented casing 01 and the infiltrated sand liner suspension (55111). The gravel inlets tube has a simple mechanism that operates by lowering the gravel setter which opens the gravel inlets. Unlike most of the systems used in the sda gravel pack which are quite complex, the present invention does not require skilled engineers to install the yo gravel pack because the installation and removal of said gravel pack is very easy and does not create problems. The SSLH suspension liner allows smooth and indefinite iteration of gravel placement operations (Ja sda completes the gravel pack and becomes homogeneous 0 and removes the gravel setter; after gravel packing is completed gravel pack Ye to automatic closing of gravel ports

A brief explanation of the drawings: The invention is easily understood thanks to the detailed description of the preferred embodiment with reference to the attached drawings, where: Figure 1 represents; For example. Schematic view of a water well completed © with infiltration sand barrier liner suspension device; Gravel pack and water pump. FIGURE 1 depicts the installation of a SSLH barrier liner hanger with a liner hanger installer. Figure 1b represents lee completing the gravel pack using the sda setup tool .gravel pack Yee Figure 1c represents a completed gravel pack. Figure ¥ is an extended view of a SSLH liner suspension device comprising elastomeric isolating gaskets and various O-rings positioned on top of the routing pipe and gravel outlet pipe. Figure “is a top view of a SSLH 10 suspension device about to be based on ? Elliptical balls are placed on the inner surface of the cementitious casing. Figure A. Jue an extended view of the mechanism inside a gravel port pipe. the shape ; An elevated view of the Gravel Setting tool. Detailed description: - 1 Figure 1 shows a water well after completing a cgravel pack and a water production septum. Figure 1 shows the constituent elements of the mechanism that generate an extension of the rubber packers (A < 1) opposite the direction of the cemented casing of cylindrical shape (1), which isolates the annulus (©) rings between the casing (1) The same SSLH casing and Yo-holding device (7).

+

The mechanism includes an upper outer sealing ring (4) which is held in place by a capped sand insulating liner (Y¢) (SSLH) suspension coupler that is bolted to the upper threaded section (01) of the guide tube ( 11); protection ring for the first upper rubber packer (©); upper © rubber packing (+); protection ring for the intermediate rubber packer ¢ (V)

bottom elastic insert (8); finally; Lever ring (3) at the bottom. Three elliptical steel balls (11) and a base supporting them are installed in three slots in the casing (not shown in the figures), which are well welded inside and outside the casing before installing the casing itself (1) and covering it with cement. Arrange the balls and shape the balls

0 round with a three-cone drill bit or other tool. The said annulus (upper hoist ring), middle and lower (5; 4) have the same outer diameter which is slightly larger than the outer and bottom diameter of the (A ¢1) rubber packer while the sand buffer liner hanger is engaged Leaky (Y) (SLE) on the triple elliptical reinforced balls oF) The push-up ring (3) Vo slides (visibly) up the guide pipe (11) where it is Orienting the other downward due to the weight of the VE Ve and in fact the upper outer sealing ring (1) that moves downward in a sliding manner with the main body of the 55111 Sand Barrier liner hanger; and squeezes the rubber upper and lower gaskets ( (1) (A) sandwiched between the upper packing protection ring

(%) push-up ring and the upper and lower (©) rubber packer 00 rubber packs. Each of the aforementioned rubber packings is squeezed; Which causes the rubber packers to be clogged in the expansion of the rubber packings (A < 1) and the sand insulating liner suspension tool (1) between the cover (©) annulus to contain (A 1) rubber packers The diameters of the rubber gaskets are determined. (1) 1

A small clearance between the diameter of the inner casing and the rubber packs (A 2) rubber packers to ensure the best seal when the rubber packers are expanded. The SSLH liner suspension (SSLH) (7) contains the gravel inlet pipe ( VY) which includes three (TY) dle and the aforementioned © pipe (VY) is bolted to the bottom of the pipe oriented to the gravel installation tool (11). As shown in Figure oT) Said gravel port tube (VY) contains a spring housing (VY) spring (18); a lower gravel port piston ring (91); a gravel port socket (17); and finally an upper gravel port piston ring. (71) Placing the Jala gravel setting tool (YY) presses the gravel port press (01) on the spring (VA) causing the ports 0 to (YA) did to move to the same socket (701). At the same level as the ports (YY) of a pipe with the mentioned gravel ports (VY). The inside of the pipe guiding the gravel setting tool (VY) contains three guide plates (11) that are welded into the pipe (11). pipe As shown in Figure o£) the three wings (YY) connected to the outer diameter of the gravel preparation tool (YY) which has three ports (YY) slide between the Vo guide plates mentioned (V1) and includes that when the gravel setting tool (TT) is lowered, their ports (FY) are oriented correctly to ensure the best overlap of the (YA) ports of the piston (01). Aggregate Setting Tool (YY) A spring (VA) causes a piston with gravel ports to return to its first position (Gly Ports (YY) of a pipe with said gravel ports (OF) Y. The procedure can be divided Completing the is water well using the device according to the present invention into three stages: 1- Installing the gravel filling (Fig. fy ab 1c). *- Installing the pump to produce water (Fig. 1).

A

55111 Gravel filling shall be preceded by the installation of the infiltrating sand liner suspension device

Glan This is achieved with a (VE Ve) Baffle / Bushing Assembly Fitting - (Y) attached to the 55111 55111 Sand Insulating Liner Suspension Device (7) by means of (V1) Liner Swivel Catcher/Release Device 0. The Aggregate Setting Tool (YF) is then installed as indicated above and the gravel packing process can begin. Gravel and water are pumped through a series of maintenance pipes and gravel outlets Say 0 (gravel annulus barrier (7) and the water returns to the surface by entering the bulkhead (VE) and through the lower and upper waterways (Fe YA) Pressure is used to determine how gravel sda progresses since pressure increases within the annulus (*) 0 where gravel filler level Jef reaches septum (V0) pressure gauges md determine the presence of gravel bridging within the gravel bed (Y0) LS indicated lila The gravel bridges must be removed from inside the gravel package (YO) to achieve sda homogeneous and compact gravel.By retrieving only the gravel setting tool (713), all necessary operations can be performed ( air lift and jet diaphragm (primarily) to remove bridges. Due to the ease of installation and removal of the dae tool, these operations can be easily repeated; at lll where gravel filling is completed; This significantly reduces setup time. In an alternative embodiment; The 55111 Sand Insulating Liner Suspension (Y) HAS ONLY ONE RUBBER PILLAR” On its adjacent sides sticking a lever washer (1) and an RUBBER PROTECTING O-ring (0)

Claims (1)

—q— Items. Protection 1-1 A device for gravel packing for cwater wells. The device generally contains a vertical cemented casing (1) and a suspension tool for an insulating liner “for leaking sand (Y)” and is distinguished This device confirms that the cemented casing mentioned (1) includes three ellipsoidal support balls (01) bearing elliptical balls 0 placed on the inner surface of the casing (1) at the same level next to the bottom; 1 These include a stop-sand liner hanger mentioned (1) VY; a pipe with gravel ports (11); 4 upper outer buffer ring (;) and at least one rubber filler (1) is adjusted between the upper rubber packer protection ring 0 (0) and the push-up ring (4); rubber packer 11 mentioned (1) by the push-up ring (4) when the first 0 rests on the (V1) DE) bearing balls which cause relative motion 0" Upward of the hoist ring (1) over the pipe guiding the gravel setting tool (11) 4 opposite the direction of downward movement of the weight of the hanger for the (Y) stop-sand liner hanger Vo and baffles / underlayings ¢(V£ < 1 0) screens/liners 1 and said pressure supplies the outer diameter of the rubber packer (1) which VY seals the annulus (7) between the cemented casing (1) casing and suspension tool .(Y) stop-sand liner hanger for YA sand liner of claim 0; And in it a gravel packing tube contains a gravel filling device - 1 inside (YY) gravel ports, which is in it? Gravel ports (VY) gravel ports Y gravel ports placed above (01) gravel ports with piston ports whose inner diameter is a piston 'based on the spring (01) mentioned piston that the piston Cus;(17); a spring-loaded box And 1 (VA) © receives in its internal construction the sda gravel packing tool (YY) gravel packing and the mentioned spring (VA) is compressed under the weight of the shawl preparing the sda gravel (YY) gravel packing When VY the latter puts Jala a suspension device for the insulating sand liner 55111 (7) which causes A to move downward to the piston 53 (V) gravel ports and causes Mle to open. 4 Gravel ports by joining together the gravel ports (YY) of the pipe (VY) 0 and the ports (YA) of the said piston (01) 1. 7*- A device for gravel packing according to the oF protection element and in which ?XY oriented plates (11) are installed at an angle of 171 degrees inside the pipe guiding the dae tool) Y filling Cus (11) gravel packing Mentioned 85 oriented plates (V1) modulate the gravel ports of the gravel setting tool axially (YY) with gravel ports © the (YA) piston 01 4- Gravel packing device according to any of the protection elements 1 or in which YX (VY) DGD elliptical balls are placed at an angle SAY 1 0- Gravel packing device gravel packing according to any of the previous items; in which the “_ upper rubber packer (1) and (sin) rubber packer (A) YF are freely adjusted around the guide pipe of said gravel setting tool (11); ; Of the above mentioned upper and lower rubber packers (1) A with the middle rubber packer (V) on one side and respectively with the + protection ring for the rubber packing the upper packer (0) and the push-up ring V-ring (3) on the other side.