Mechanical sand control methods

Mechanical sand control methods

This article describes mechanical sand control methods and covers the following topics:

¬∑Gravel packing techniques i.e. Internal Gravel Packing (IGP) and External Gravel Packing (EGP), and the various…

Workover programme - tubing change out

1 Introduction and Requirements

1.1 Objectives

To replace the leaking completion tubing in oil producer.

1.2 Documentation

1.3 Account Number and Timing

The account number for the workover operation…

Design Gravel Pack Liner for Deviated Wells

This article gives an example of completion design with IGP (Internal Gravel Pack) inside a 9 5/8" production casing set through a deviated reservoir (approx. 40 degrees). The most important equipment…

Sand control Introduction

Sand production from oil and gas reservoirs will occur when the stresses in the formation rock exceed the mechanical strength of the rock material. This can happen in both unconsolidated and clastic…

Coil Tubing Equipment

1 General

The coiled tubing operation permits the technique of "snubbing" a continuous length of tubing in and out of a live well through a stripper BOP arrangement. It consist of the following…

Coil Tubing Applications

1 General

Advances in coiled tubing manufacturing techniques and stress/fatigue prediction, have reduced the risk of coiled tubing failure.

In principle, live/flowing well can be introduced in an…

Sand removal and monitoring equipment

Substantial gains can be made by deferring or avoiding the installation of downhole sand control. Implicit in this, is the acceptance that sand will arrive at surface and that the processing…

Internal gravel packing procedures

Examples of internal gravel packing procedures are given below. These programmes contain specific information which may only be relevant for a particular field, and hence may require to be adapted for…

Coiled tubing operations and HSE considerations

1 Service selection

The selection of the well intervention method for a particular task should consider:

  • Geographic location: The location determines accessibility, weight/size/configuration…

Recommended procedure for preparation of hec gravel-pack slurry

It has been established that the preparation of HEC based gravel-pack slurries is critical to the performance of the gravel pack. It has also been shown that many techniques presently in wide use lead…

TCP Perforating Programme

TCP Perforating Programme

Sequence of Operations:

1. M/U flow head assembly and pressure test selectively to 150 bar as follows:

1) From bottom up against bottom master valve.

2) From bottom up against swap and fail safe…

Typical coiled tubing procedures

1 Sand Consolidation

1.1 Introduction

This job outline provides the general considerations to be taken when carrying out a sand consolidation job by coiled tubing. The details will be dependent on the…

Desing Prepacked Screens Liner for horizontal Wells

This article gives an example of completion design for a  "Slim-pack" prepacked screens, run barefoot in a horizontal 8 1/2" reservoir section. The most important equipment parts and the design…

Installation procedure for Prepacked Screens in Horizontal Open Hole Section

These example procedures are based on a balanced rotationally locked washdown system.

-   The following procedures assume the open hole horizontal section to have been drilled with…

Production Testing - HSE Requirements

This article only describes specific safety and environmental aspects during production testing. A separate document must be available with detailed procedures for the safety precautions during all…

External gravel packing procedures - Conventional gravel packing

This article describes the procedure for conventional external gravel packing.

1.With the liner set and the gravel pack tool in the circulating position establish circulation at 0.5-5 bbls/min.

2.Commence…

Contingency procedures

A number of unplanned scenerarios are possible, when carrying out a sand consolidation job. Below are a list of the most likely ones, and the corresponding contingencies procedure associated with…

Sampling analysis procedure - sand control

This article describes the sampling analysis procedure for sand control: conventional and side stream filtration method.

1 Conventional procedure

By passing the oil sample through a sieve of a given…

Test procedure for sand wash systems

 This article describes 3 tests: dry spray test, submerged spray test and full operational test.

Dry spray test

This test is conducted on an empty vessel with the manways uncovered to observe the…

Production testing requirements

Production testing may cover a whole range of operations and involvement of a number of services and equipment contractors. In the following, general requirements to the outline, execution and…

Organization and Responsibilities during Production Testing

Production testing is potentially a hazardous operation which requires good planning, programming, and preparation. Active co-operation and co-ordination between all parties involved are essential to…

Planning of sand control

Massive sand production from unconsolidated sandstone can occur as soon as the well is brought on stream. This may quickly lead to unmanageable problems in which case sand control methods will be…