Abstract: There is provided a downhole sucker rod pump comprising: a plunger, a housing including an inner surface, a housing passage defined by the inner surface, and a recess defined within the inner surface of the housing. The plunger and the housing are co-operatively configured such that the plunger is operable for reciprocating movement through the housing passage, with effect that: the plunger traverses a plunger-traversable section of the inner surface of the housing, and solids-comprising reservoir fluid material is displaceable in an uphole direction via the housing passage. At least a portion of the recess is a plunger-traversable recess, and the plunger-traversable recess portion is defined within the plunger-traversable section, the housing passage includes a downhole space disposed downhole relative to the plunger-traversable section, and the plunger-traversable recess portion is disposed in flow communication with the downhole space.

Abstract: An apparatus for connecting a first wellsite tube to a second wellsite tube includes a collar configured to engage with outer conduits of the first and second wellsite tubes. A coupling is disposed inside the collar and includes a first end axially disposed from a second end. A first structure is configured to provide sliding engagement between the first end of the coupling and an inner conduit of the first wellsite tube. A second structure is configured to provide threaded engagement between the second end of the coupling and an inner conduit of the second wellsite tube. A plurality of radially extending ribs are disposed between the opposing ends of the collar and support the coupling inside the collar.

Abstract: An apparatus for connecting a first wellsite tube to a second wellsite tube includes a collar configured to engage with outer conduits of the first and second wellsite tubes. A coupling is disposed inside the collar and includes a first end axially disposed from a second end. A first structure is configured to provide sliding engagement between the first end of the coupling and an inner conduit of the first wellsite tube. A second structure is configured to provide threaded engagement between the second end of the coupling and an inner conduit of the second wellsite tube. A plurality of radially extending ribs are disposed between the opposing ends of the collar and support the coupling inside the collar.