Buy API 11BR: RECOMMENDED PRACTICE FOR THE CARE AND HANDLING OF SUCKER RODS from SAI Global. Find the most up-to-date version of API RP 11BR at Engineering Generally, API standards are reviewed and revised, reaffirmed, or withdrawn at [1] API RP 11BR, Recommended Practice for Care and Handling of Sucker.

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Thus, they could be used in a hydrogen sulfide H 2 S environment in which the strength of Grade C rods is exceeded.

Sufficient sinker bars or a special pull-down pump had to be used to keep any compressive force from acting on the strand. If the environment is corrosive and not properly treated, the sucker rods and their associated downhole equipment life is minimal. Ideally, a rod string should be a continuous taper from top to bottom.

API RP 11BR Revisions on Sucker Rod Makeup

The primary factor in determining the proportion of each size of rod in the rod string is the size of the pump. Thus, when placing the rod string with new suckers, new pony rods should be used.

To make up a sucker-rod joint using CD, the pin and coupling threads should be cleaned and lubricated with a lubricant that has passed the NACE MR screening test.

Makeup the connection to the hand-tight position. The primary factor determining the proportion of each size of rod in the rod string is the size of the pump. This is because it has to support the weight of the rest of the small-diameter rod load, the pump and the very large fluid load on the gross seating nipple area.

This coupling type, however, decreases the coupling area available for 111br the pumping loads. This enables operators to run 1-in. Gibbs [23] in was a major step forward because its use permitted design or analysis for all types of units and rod strings. Original work by Gipson and Swaim [10] recommended derating 11bd couplings on the basis of the assumption that the 1-in.


These variables include, but are not limited to: Columns 6 through 11 in Table D. AISI or type steels, which have high tensile strengths. One of the earliest means used for designing tapered sucker-rod strings is in the 11bd Rod Handbook.

The taper percentages published in RP 11L were calculated from the Neely, [6] procedure by assuming several parameters like pumping speed, polished rod stroke length, etc.

Combining this with the normally corrosive environmental conditions of water, H 2 S, CO 2etc. Carrying spi the various procedures described in this section can greatly reduce operating costs and make production more efficient and economical. The advantage of this rod is its ability to pull the entire rod string in one piece with a special pulling unit.

They also are standardized in size and performance by API Spec.

API RP 11BR Revisions on Sucker Rod Makeup

Documents Flashcards Grammar checker. The accuracy in determining the applied torque value is cost dependent.

Worksheet 36 – Thermal Processes Review. The first column of Table I in this reference contains the apu size designation. These rods have a special heat treatment that should put the surface in a compressive set. The differences lead to the conclusion that an accurate rod string design should be based on calculations using actual pumping conditions. Manufacturers of non-API rods should specify the rod’s allowable stress. Sucker-rod strings are lifting a great deal of weight every cycle.

Sufficient calculations need to be done to assess the economic impact for all wells in a field. The first number in the column refers to the largest rod size in the string, while the second number refers to the smallest rod size in the string, both representing the size in eighths of an inch.

The rod string’s stretch in Table 4. The Case Study – Brandon L. Friction in the pump 11r plus sediments in the pump-tubing annulus increases the required pump-unseating force. As with any specialty equipment, good field testing pai records for several years in which good handling and operating practices were followed are required to prove the benefit for any of these non-API rods.


The values were determined based upon actual strain gauge readings and resulting stress calculations by an API industry workgroup reference R. The author is solely responsible for the content of the materials. The sucker-rod string is often highly stressed and usually fails because of the repeated load reversals. Despite having high strength and a small cross-sectional area, it was expensive and ran into field support problems similar to those of flexible strands and CORODs.

The proper design will decrease the stress on the rods above the bottom section.

RP 11BR Archives – Production Technology

These rods are normally made from protruded fiberglass. Maximum tension 40 ksi Edward L.

These rods have been effectively used to produce approximately BFPD from a depth of approximately 14, ft. Stress raisers may be notches caused by improper handling, tool cuts, bending, and subsequent cold straightening, for example, and may also result from the manner in which the threads are formed on the rod pin i.

Tapered rod strings that use different apu of different-sized rods are commonly used to save unnecessary weight and to distribute the loading on long strings of rods used in deep wells. This cable was a continuous strand that required special pulling equipment.

However, 11hr only one grade of rod is used in the string to avoid mixing during running and apo operations. Replacing a rod string one rod at a time is not normally a good operating practice; thus, the economic life of a rod string needs to be considered if rods start to fail.

The predicted loads should be compared to the actual loads and the associated fluid production.