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API RP 4G

Recommended Practice for Maintenance and Use of Drilling and Well Servicing Structures

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Organization: API
Publication Date: 1 January 1992
Status: inactive
Page Count: 27
scope:

GENERAL

These recommendations should be considered as supplemental to, and not as a substitute for. the manufacturer's instructions and the recommendations in the most current edition of API RP 54. Recommended Practices for Occupational Safety and Health for Oil and Gas Well Drilling and Servicing Operations.

The manufacturer has used great care in design and selection of materials for his drilling or well servicing structure. The structure should give satisfactory performance when used within the stipulated load capacities and in accordance with instructions. Every crew member should be given instructions and training in erecting, lowering, and using the structure.

The safe operation of drilling and well servicing structures depends on whether the foundation is adequate for the load imposed. The design load for foundation requirements should be the sum of the weight of the drilling or well servicing structure, the weight of the machinery and equipment on it, the maximum hook load of the structure, forces due to external guywire loading, and the maximum setback load. (See Section 7, Foundations for Portable Masts with Guylines).

In the erecting and lowering operations utilizing the rig drawworks, the slowest practical line speed should be used.

Loads due to impact, acceleration, and deceleration may be indicated by fluctuation of the weight indicator and the operator should keep the indicator readings within the name plate hook load capacity.

Some rig designs require that the mast base structure be restrained against uplift from the application of mast hook load. For the requirements of a specific rig, check the manufacturer's operating instructions.

Each part of a bolted structure is designed to carry its share of the load; therefore, parts omitted or improperly placed may contribute to the failure of the structure. In the erection of bolted structures, so far as it can be done safely, the bolts should be tightened only slightly tighter than finger-tight until the erection of the structure is completed, after which all bolts should be drawn tight This procedure permits correct alignment of the structure which will result in proper load distribution.

Document History

February 1, 2019
Operation, Inspection, Maintenance, and Repair of Drilling and Well Servicing Structures
Objective This document provides guidelines and establishes recommended procedures for inspection, maintenance, and repair of items for drilling and well servicing structures, in order to maintain...
February 1, 2019
Operation, Inspection, Maintenance, and Repair of Drilling and Well Servicing Structures
Objective This document provides guidelines and establishes recommended procedures for inspection, maintenance, and repair of items for drilling and well servicing structures, in order to maintain...
February 1, 2019
Operation, Inspection, Maintenance, and Repair of Drilling and Well Servicing Structures
Objective This document provides guidelines and establishes recommended procedures for inspection, maintenance, and repair of items for drilling and well servicing structures, in order to maintain...
April 1, 2012
Operation, Inspection, Maintenance, and Repair of Drilling and Well Servicing Structures
Objective This document provides guidelines and establishes recommended procedures for inspection, maintenance, and repair of items for drilling and well servicing structures, in order to maintain...
April 1, 2012
Operation, Inspection, Maintenance, and Repair of Drilling and Well Servicing Structures
Objective This document provides guidelines and establishes recommended procedures for inspection, maintenance, and repair of items for drilling and well servicing structures, in order to maintain...
April 1, 2012
Operation, Inspection, Maintenance, and Repair of Drilling and Well Servicing Structures
Objective This document provides guidelines and establishes recommended procedures for inspection, maintenance, and repair of items for drilling and well servicing structures, in order to maintain...
April 1, 2004
Use and Procedures for Inspection, Maintenance, and Repair of Drilling and Well Servicing Structures
OBJECTIVE The objective of this publication is to give guidelines and establish recommended procedures for inspection, maintenance and repair of items for drilling and well servicing structures, in...
April 1, 2004
Use and Procedures for Inspection, Maintenance, and Repair of Drilling and Well Servicing Structures
OBJECTIVE The objective of this publication is to give guidelines and establish recommended procedures for inspection, maintenance and repair of items for drilling and well servicing structures, in...
April 1, 2004
Use and Procedures for Inspection, Maintenance, and Repair of Drilling and Well Servicing Structures
OBJECTIVE The objective of this publication is to give guidelines and establish recommended procedures for inspection, maintenance and repair of items for drilling and well servicing structures, in...
October 1, 1998
Recommended Practice for Maintenance and Use of Drilling and Well Servicing Structures
5.1.2 Scope API MPMS Chapter 5 is intended to be a guide for the proper specification, installation, and operation of meter stations designed to dynamically measure liquid hydrocarbons so that...
API RP 4G
January 1, 1992
Recommended Practice for Maintenance and Use of Drilling and Well Servicing Structures
GENERAL These recommendations should be considered as supplemental to, and not as a substitute for. the manufacturer's instructions and the recommendations in the most current edition of API RP 54....
January 1, 1992
Recommended Practice for Maintenance and Use of Drilling and Well Servicing Structures
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