Rod Guide With Discharge Deflector
A downhole sucker rod pump including a deflector configured to deflect fluid including solids from discharging against the inner wall of well tubing. The sucker pump deflector is configured to deflect discharged fluid upwardly in the well tubing, parallel to the inner wall of the well tubing to prevent abrasion. In one exemplary embodiment, the deflector may comprise a sleeve configured to be attached to the top of the sucker pump, such that fluid is discharged against an inner wall of the sleeve and directed upwardly. The sleeve may be threaded and attached to a threaded circumference of the top of the sucker pump.
The present invention is generally related to the field of oil wells, and more particularly to downhole sucker rod pumps.
BACKGROUNDIn the oil industry, there are many types of oil pumps that may be utilized to extract petroleum oil from the earth, depending on the formation that the oil resides in. In a typical downhole well, a downhole sucker rod pump is usually utilized, and which is driven by a reciprocating pump arm situated on the site above the downhole well.
While downhole sucker rod pumps have been utilized for many years, there are still challenges and problems that operators face. One problem is the abrasion of an inner diameter of well tubing due to expelling fluids including oil and solids against the inner diameter of the well tubing. Typical sucker pumps expel the fluid at an angle against the inner diameter of the well tubing, which causes the abrasion, and corrosion. This abrasion of the inner diameter necessities repair or replacement of the well tubing, which creates significant maintenance costs in the thousands of dollars, downtime, and lost revenue to the operator. Downhole wells may easily reach 10,000 or 12,000 feet, which depth exacerbates the recovery of the pump and well tubing for servicing.
There is desired an improved system for preventing solids from abrading the inner diameter of well tubing, to extend the useful life of well tubing and reduce operating and servicing costs.
SUMMARYThe present disclosure achieves technical advantages as a downhole sucker rod pump including a deflector configured to deflect fluid including solids from discharging against the inner wall of well tubing. The sucker pump deflector is configured to deflect discharged fluid, upwardly in the well tubing, parallel to the inner wall of the well tubing to prevent abrasion. In one exemplary embodiment, the deflector may comprise a sleeve configured to be attached to the top of the sucker pump, such that fluid is discharged against an inner wall of the sleeve and directed upwardly. The sleeve may be threaded and attached to a threaded circumference of the top of the sucker pump.
Referring now to
The expelled fluid may include solids and other particulates such that the expelled fluid impinges and abrades the inner wall 19 of the well tubing 12. During the down stroke of the piston 18, fluid also transfers from the piston cavity 24 into cavity 23 of the pump barrel 16 defined above the piston 18 via barrel opening 26, as shown. An upper portion of the discharge guide 21 has a shoulder 25 tapering inwardly from the inner wall 19 and includes the openings 29 defined through the shoulder 25. The inner wall of the well tubing 12 has dimension D2.
Referring to
Referring to
As shown in detail in
In one exemplary embodiment, OD3 is 1.625 inches, OD4 is 1.75 inches, and the height of the deflector 40, dimension PL, is 2.25 inches. The threadings 42 and 46 may be 1.827-16.
In another exemplary embodiment, OD3 is 2.00 inches, OD4 is 2.25 inches, and the height of the deflector 40, dimension PL is 2.75 inches. The threadings 42 and 46 may be 2.068-16.
Though the invention has been described with respect to exemplary embodiments, many variations and modifications will become apparent to those skilled in the art upon reading the present application. The intention is therefore that the appended claims be interpreted as broadly as possible in view of the prior art to include all such variations and modifications.
Claims
1. A downhole well pump for insertion in a downhole well tubing, comprising:
- a well pump including a pump barrel and plunger disposed therein configured to be placed within a stationary downhole well tubing having an inner wall, the pump barrel having an outer diameter and a discharge guide configured to guide the plunger and having at least one opening, the well pump configured to draw fluid from under the well pump and expel the fluid, laterally through the at least one opening and toward the inner wall of the well tubing;
- a deflector coupled to an upper portion of the pump barrel and not completely encompassing the discharge guide, the deflector configured to deflect and change a direction of the fluid as it is expelled from the at least one opening of the discharge guide to prevent abrasion of the well tubing inner wall proximate the at least, one opening, wherein the deflector has an outer diameter no greater than the pump barrel outer diameter.
2. The downhole pump as specified in claim 1 wherein the deflector comprises a sleeve.
3. The downhole pump as specified in claim 2 wherein the deflector comprises, a cylinder.
4. The downhole pump as specified in claim 1 wherein the deflector is threadably secured to the upper portion of the pump barrel.
5. The downhole pump as specified in claim 4 wherein the upper portion of the pump barrel comprises a first threading, and the deflector comprises a second threading configured to threadably secure to the pump barrel first threading.
6. The downhole pump as specified in claim 2 wherein the sleeve and the pump barrel have a common outer diameter.
7. The downhole pump as specified in claim 1 wherein the discharge guide has a shoulder including the at least one opening.
8. The downhole pump as specified in claim 7 wherein the pump barrel has threading defined below the shoulder.
9. The downhole pump as specified in claim 7 wherein the discharge guide has a plurality of openings defined in the shoulder.
10. The downhole pump as specified in claim 2 wherein the sleeve covers the at least one opening.
11. A system, comprising:
- a stationary well tubing having an inner wall and configured to be disposed in the earth;
- a well pump including a pump barrel and a plunger disposed therein placed within the stationary well tubing, the pump barrel having a discharge guide configured to guide the plunger and having at least one opening, the well pump configured to draw fluid from under the well pump and expel the fluid laterally through the at least one opening and toward the inner wall of the well tubing; and
- a deflector coupled to an upper portion of the pump barrel and not completely encompassing the discharge guide, the deflector configured to deflect and change a direction of the fluid as it is expelled from the at least one opening of the discharge guide to prevent abrasion of the well tubing inner wall proximate the at least one opening, wherein the deflector has an outer diameter no greater than the pump barrel outer diameter.
12. The system as specified in claim 11 wherein the deflector comprises a sleeve.
13. The system as specified in claim 12 wherein the deflector comprises a cylinder.
14. The system as specified in claim 11 wherein the deflector is threadably secured to the upper portion, of the pump barrel.
15. The system as specified in claim 14 wherein the upper portion of the pump barrel comprises a first threading, and the deflector comprises a second threading configured to threadably secure to the pump barrel first threading.
16. The system as specified in claim 12 wherein the sleeve and the pump barrel have a common outer diameter.
17. The system as specified in claim 11 wherein the discharge guide has a shoulder including the at, least one opening.
18. The system as specified in claim 17 wherein the pump barrel has threading defined below the shoulder.
19. The system as specified in claim 17 wherein the discharge guide has a plurality of openings defined in the shoulder.
20. The system as specified in claim 12 wherein the sleeve covers the at least one opening.
Type: Application
Filed: Apr 29, 2016
Publication Date: Nov 2, 2017
Inventor: Kenny Pulliam (Odessa, TX)
Application Number: 15/142,812