Mud pump systems for wellbore operations

a wellbore and pump system technology, applied in the direction of borehole/well accessories, positive displacement liquid engines, liquid fuel engines, etc., can solve the problems of ineffective or inefficient valve operation, erosive and damaging effects of suction valves and discharge valves, and add to the damage of fluids
US20100098568A1Inactive Publication Date: 2010-04-22NAT OILWELL VARCO LP
65 Cites 27 Cited by

Patent Information

Authority / Receiving Office
US · United States
Patent Type
Applications(United States)
Current Assignee / Owner
NAT OILWELL VARCO LP
Publication Date
2010-04-22
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

A system for pumping a drilling fluid mixture, the system, in certain aspects, having a pump apparatus, the pumping apparatus having a body with an inlet and an outlet, a suction valve and a discharge valve in the body for selectively controlling flow through the body, or each valve having a curved valve seat and a valve member with a curved seating surface, the valve member selectively movable to seat against the curved valve seat to prevent the flow of the drilling fluid mixture past the valve seat; and, in one aspect, a seal in the curved valve seat against which the valve member is also sealable. This abstract is provided to comply with the rules requiring an abstract which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure and is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims, 37 C.F.R. 1.72(b).
Need to check novelty before this filing date? Find Prior Art

Description

BACKGROUND OF THE INVENTION

[0001] 1. Field Of The Invention

[0002] This present invention is directed to drilling wellbores in the earth, to systems for pumping drilling fluid (“mud”) for such operations, to mud pumping systems and valves for them, and methods of their use.

[0003] 2. Description of Related Art

[0004] The prior art discloses a wide variety of drilling systems, apparatuses, and methods including, but not limited to, the disclosures in U.S. Pat. Nos. 6,944,547; 6,918,453; 6,802,378; 6,050,348; 5,465,799; 4,995,465; 4,854,397; and 3,658,138, all incorporated fully herein for all purposes. The prior art discloses a wide variety of drilling fluid pumps (“mud pumps”) used in drilling operations and pump systems, for example, and not by way of limitation, those pumps and systems disclosed in U.S. Pat. Nos. 6,257,354; 4,295,366; 4,527,959; 5,616,009; 4,242,057; 4,676,724; 5,823,093; 5,960,700; 5,059,101; 5,253,987; in U.S. applications Ser. No. 10 / 833,921 filed Apr. 28, 2004 (all s...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More