Multipurpose Rig Pump Assembly With Isolated Mud and Cement Flow

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Solution Overview

Problem

Conventional drilling operations face challenges due to the need for separate and isolated mud pumping and cement pumping assemblies, which occupy significant space and incur high costs, with potential catastrophic consequences from fluid contamination during different stages of well completion.

Innovation Solution

A centralized metering and manifold platform system integrates a multipurpose pump that can alternately or sequentially pump mud and cement slurry, with isolated inlets and outlets for each fluid, and a control unit to streamline operations and minimize contamination risks.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If separate and isolated mud pumping and cement pumping assemblies are used, then fluid contamination is prevented, but space requirements and operational costs increase significantly

Engineering Contradiction:

Improvefluid contamination preventionVSAvoidspace requirements

Core Design Contradiction:

ReliabilityVSArea of stationary object

Solution Approach 1:

The pump assembly is segmented into separate isolated inlets and outlets for mud and cement operations, with internal flow paths that can be independently controlled through valve mechanisms, allowing single-pump operation while preventing fluid contamination

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

A single pump assembly is designed to perform multiple functions by alternately pumping both mud and cement slurries through isolated inlets and outlets, eliminating the need for separate dedicated pumps for each fluid type while maintaining contamination prevention

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Reliability

If separate and isolated mud pumping and cement pumping assemblies are used, then fluid contamination is prevented, but operational costs increase

Engineering Contradiction:

Improvefluid contamination preventionVSAvoidoperational costs

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

Valve mechanisms act as intermediaries to control and direct fluid flow through the single pump assembly, enabling alternating operation between mud and cement pumping while maintaining isolation and preventing contamination

Inventive Principle:

Principle #24Intermediary (Mediator)

3Area of stationary object

If a multipurpose pump with isolated inlets and outlets is used, then space requirements and costs are reduced, but risk of fluid contamination increases

Engineering Contradiction:

Improvespace requirementsVSAvoidfluid contamination risk

Core Design Contradiction:

Area of stationary objectVSObject-affected harmful factors

Solution Approach 1:

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Inventive Principle:

Principle #24Intermediary (Mediator)

4Adaptability or versatility

If separate mud pumping and cement pumping assemblies are used, then equipment redundancy is maximized, but equipment usage efficiency decreases

Engineering Contradiction:

Improveequipment redundancyVSAvoidequipment usage efficiency

Core Design Contradiction:

Adaptability or versatilityVSProductivity

Solution Approach 1:

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The pump assembly incorporates dynamic valve control mechanisms that allow alternating operation between mud and cement pumping modes, enabling a single pump to adaptively serve multiple functions that previously required separate static equipment

Inventive Principle:

Principle #15Dynamics

Data Source

PatentUS20260034844A1Cement mixer and multiple purpose pumper (CMMP) for land rig

Publication Date: 2026.02.05 SCHLUMBERGER TECH CORP

AI summary

Embodiments disclosed provide a pump assembly including a first pump for delivering at least one fluid. The first pump may include a first inlet coupled to the first pump for delivering at least one first fluid to the first pump, a second inlet coupled to the first pump for delivering at least one second fluid to the first pump, a first discharge coupled to the first pump for delivering the at least one first fluid at a first pressure, and a second discharge coupled to the first pump for delivering the at least one second fluid at a second pressure. In some embodiments, the first discharge and the second discharge are isolated from each other.