US3343409A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of determining sucker rod pump performance
Assignee: Shell USA Inc
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Filing: 1966-10-21
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Granted: 1967-09-26
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Expires: 1986-10-21
Abstract
No abstract record available.
Inventors
- 👤 Sam G Gibbs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 17:02
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/12; E21B43/121; E21B43/126; E21B43/127; E21B47/00; E21B47/008; F; F04; F04B; F04B49/00; F04B49/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
179 words
A METHOD OF DETERMINING THE PERFORMANCE CHARACTERISTICS OF A PUMPING WELL WHEREIN A RECIPROCATING PUMP IS LOCATED BELOW THE FLUID LEVEL OF THE WELL AND HAS A PISTON THEREIN WITH A SUCKER ROD STRING EXTENDING UPWARD TO A POLISHED ROD WHICH IS CONNECTED TO A RECIPROCATING PRIME MOVER MEANS AT THE TOP OF THE WELL, SAID METHOD COMPRISING: (A) MEASURING THE AREA OF EACH ROD SIZE IN THE SUCKER ROD STRING, THE COMBINED LENGTH OF THE RODS IN THE SUCKER ROD STRING, THE WEIGHT OF THE SUCKER RODS AND THE PUMP, AND THE WEIGHT OF THAT PORTION OF THE SUCKER ROD HANGING IN SAID FLUID; (B) ACTUATING SAID SUCKER ROD STRING TO RECIPROCATE THE PUMP, WHEREBY SAID PUMP PISTON GENERATES ACOUSTIC WAVES WHICH MOVE ALONG THE SUCKER ROD; (C) MEASURING AND RECORDING THE LOAD AND DISPLACEMENT OF THE POLISHED ROD AS FUNCTIONS OF TIME; (D) SELECTING A DEPTH WITHIN THE WELL TO BE INVESTIGATED AND COMBINING THE CORRESPONDING COMPONENTS OF THE SIZE AND WEIGHT DATA MEASURED IN STEP (A) WITH THE LOAD AND DISPLACEMENT VERSUS TIME DATA MEASURED IN
Claim 2
Independent Claim
179 words
A METHOD OF DETERMINING THE PERFORMANCE CHARACTERISTICS OF A PUMPING WELL WHEREIN A RECIPROCATING PUMP IS LOCATED BELOW THE FLUID LEVEL OF THE WELL AND HAS A PISTON THEREIN WITH A SUCKER ROD STRING EXTENDING UPWARD TO A POLISHED ROD WHICH IS CONNECTED TO A RECIPROCATING PRIME MOVER MEANS AT THE TOP OF THE WELL, SAID METHOD COMPRISING: (A) MEASURING THE AREA OF EACH ROD SIZE IN THE SUCKER ROD STRING, THE COMBINED LENGTH OF THE RODS IN THE SUCKER ROD STRING, THE WEIGHT OF THE SUCKER RODS AND THE PUMP, AND THE WEIGHT OF THAT PORTION OF THE SUCKER ROD HANGING IN SAID FLUID; (B) ACTUATING SAID SUCKER ROD STRING TO RECIPROCATE THE PUMP, WHEREBY SAID PUMP PISTON GENERATES ACOUSTIC WAVES WHICH MOVE ALONG THE SUCKER ROD; (C) MEASURING AND RECORDING THE LOAD AND DISPLACEMENT OF THE POLISHED ROD AS FUNCTIONS OF TIME; (D) SELECTING A DEPTH WITHIN THE WELL TO BE INVESTIGATED AND COMBINING THE CORRESPONDING COMPONENTS OF THE SIZE AND WEIGHT DATA MEASURED IN STEP (A) WITH THE LOAD AND DISPLACEMENT VERSUS TIME DATA MEASURED IN
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-09-25 | 1971-03-27 | 1971-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-25 | 1975-03-27 | 1975-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-25 | 1979-03-27 | 1979-09-26 | $7700.00 | Window Closed / Lapsed |