Magnus® Rotary Steerable System Delivers 6-In. Section in 1 Run, Saves 9 Days of Drilling Time

Objectives

Obtain accurate logging-while-drilling (LWD) data as required in real time and memory in an offshore, horizontal well.
Drill with improved performance compared to offset wells in the field by increasing the on-bottom rate of penetration (ROP), reducing stick-slip and vibration levels, and achieving zero nonproductive time (NPT).
Maintain a trajectory with a maximum dogleg severity of 5.5°/30 m (100 ft) to minimize borehole tortuosity for post-drilling operations.

Our Approach

The Weatherford team recommended a drilling solution, including LWD technologies and the 4.75-in. Magnus rotary steerable system (RSS).
During the planning stage, the team engaged with the customer to develop a Front-End Engineering Design report based on an offset well analysis and Weatherford experience in this field. This approach covered these critical points:
- Best practices to maximize RSS performance while minimizing certain drilling hazards identified during the risk assessment stage.
- Tailored bottomhole assembly (BHA) design focused on torque and drag, hydraulics, and vibration optimization.
- Stuck-pipe mechanism assessment and mitigation controls to reduce the BHA stabilization points while managing job safety hazards.
- Hole-cleaning procedure made for this well and agreed on with the customer.
- Customized driller’s roadmap with critical operations and field-crew guidance covering all the trajectory sections and formation specifics.
- Implementation of operational guidelines with risk controls to perform the whipstock exit and drill directly after with the RSS BHA.
Upon deployment, the Magnus RSS worked with LWD technologies to inform drilling. Its near-bit inclination coupled with LWD resistivity and sonic imaging to help minimize reservoir uncertainties, maintain pay-zone contact, and ultimately land the well. The HAGR sensor helped to identify formation tops in real time. LWD pressure measurements provided live information on downhole hydraulics and fluid performance.
The Magnus RSS kicked off from the whipstock. It drilled 9,249 ft over 394 operating hours with a 26% increase in average ROP and a 50% reduction in stick-slip and vibration levels compared to offset wells.
The RSS worked against a formation dip angle of 5 to 10° to intercept all planned geological targets within a target window having a 10-m radius and running 6.6 ft (2 m) above and 13.1 ft (4 m) below the reservoir top.

Value to Customer

The Weatherford solution, including the Magnus RSS and LWD technologies, acquired accurate data to mitigate drilling problems and optimize the process.
The Magnus RSS helped to deliver the well 9 days faster than previous offset wells for a savings of more than US $2.5 million by increasing the average ROP, reducing stick-slip and vibration during drilling, and avoiding NPT caused by Weatherford equipment.
The solution provided excellent whipstock-exit and trajectory control with the longest step-out compared to previously drilled offset wells. This execution eliminated the need for an extra run using a positive displacement motor to initiate a sidetrack.

Learn More

Drilling Services

Magnus RSS

Print Version

Details

Location

Black Sea, Romania

Well Type

Offshore, horizontal, oil

Formation

Sandy marls, agrillaceous limestones, calcareous claystone, sandstone

Hole Size and Angle

6 in., 90°

Casing Size and Type

9 5/8- and 7-in. N80

Liner Size and Type

4 1/2-in. P110

Temperature

230°F (110°C)

Pressure

3,989 psi (275 bar)

Depth

5,358 to 14,606 ft (1,633 to 4,452 m)

Products/Services

Tubular Running Assurance

MARS™

MODUS™

CENTRO®

Subsea Water-Cut Meter

Driving MPD adoption with ... 01/15/2024

Weatherford’s Well Construction Platform ... 11/14/2023

Weatherford, Honeywell Collaborate on ... 11/07/2023

Real Results around the world

Magnus® Rotary Steerable System

Objectives

Our Approach

Value to Customer

Learn More

Contact Weatherford

MARS^™

MODUS^™

CENTRO^®