IADC Underbalanced Operations & Managed Pressure Drilling (UBO/MPD) Committee
To promote the safe and efficient execution of underbalanced operations and managed pressure drilling worldwide.
Martyn Parker, Pruitt
Chris Scarborough, BP
Leesa Teel, IADC
A member appointed by the Chairman of IADC will chair the IADC Underbalanced Operations & Managed Pressure Drilling (UBO/MPD) Committee. The Committee Chairman may at his discretion appoint a reasonable number of Committee Vice-Chairmen to oversee specific disciplines or issues (e.g., onshore/offshore safety issues, environmental practices, specific regulatory issues, etc.)
General meetings are open to participants from all categories of IADC membership. The Chairman may invite non-members to attend when it furthers the interests of the Committee. At the discretion of the Chairman and IADC staff, the meeting or portions of the meeting may be exclusively reserved for drilling contractor members. Meetings will be held at such times and locations as may be selected by the Chairman with the advice of the Committee.
IADC Committee activities are governed by IADC’s Antitrust Policy and Guidelines.
|1-3 March 2022||General Committee Meeting||Virtual, online|
|7-9 December 2021||General Committee Meeting||Virtual, online|
|17 September 2021||General Committee Meeting||Virtual, online|
|1 June 2021||General Committee Meeting||Virtual, online|
|2 March 2021||General Committee Meeting||Virtual, online|
|9-11 December 2020||General Committee Meeting||Virtual, online|
|27-28 October 2020||General Committee Meeting||Virtual, online|
|24-25 June 2020||General Committee Meeting||Virtual, online|
|3-5 December 2019||General Committee Meeting||Houston, TX, USA|
|17-19 September 2019||General Committee Meeting||Houston, TX, USA|
|4-6 June 2019||General Committee Meeting||Houston, TX, USA|
|11-12 April 2019||General Committee Meeting||Houston, TX, USA|
|4-6 December 2018||General Committee Meeting||Houston, TX, USA|
|18 – 20 September 2018||General Committee Meeting||Houston, TX, USA|
|19 – 20 April 2018||General Committee Meeting||Houston, TX, USA|
|6 – 8 February 2018||General Committee Meeting||Houston, TX, USA|
|5 – 7 December 2017||General Committee Meeting||Houston, TX, USA|
|19-21 September 2017||General Committee Meeting||Houston, TX, USA|
|6 – 8 June 2017||General Committee Meeting||Houston, TX, USA|
|30 – 31 March 2017||General Committee Meeting||Houston, TX, USA|
|29 November – 1 December 2016||General Committee Meeting||Houston, TX, USA|
|23-25 August 2016||General Committee Meeting||Houston, TX, USA|
|14-15 April 2016||General Committee Meeting||Houston, TX, USA|
|23-24 February 2016||General Committee Meeting||Rijswijk, The Netherlands
Houston, TX, USA
|8-10 December 2015||General Committee Meeting||Houston, TX, USA|
|24-26 August 2015||General Committee Meeting||Houston, TX, USA|
|15 -16 April 2015||General Committee Meeting||Houston, TX, USA|
|10 – 12 February 2015||General Committee Meeting||Houston, TX, USA|
|9-11 December 2014||General Committee Meeting||Houston, TX, USA|
|3-5 September 2014||General Committee Meeting||Bergen, Norway|
|10 – 11 April 2014||General Committee Meeting||Madrid, Spain|
|11 – 13 February 2014||General Committee Meeting||Houston, TX, USA|
|3 – 5 December 2013||General Committee Meeting||Oslo, Norway|
|10 – 12 September 2013||General Committee Meeting||Houston, TX, USA|
|25 – 26 June 2013||General Committee Meeting||Frankfurt, Germany|
|15 – 16 April 2013||General Committee Meeting||San Antonio, TX, USA|
|3 – 5 December 2012||General Committee Meeting||Copenhagen, Denmark|
|10 -12 September 2012||General Committee Meeting||Houston, TX, USA|
|4 – 6 June 2012||General Committee Meeting||Oslo, Norway|
|22 – 23 March 2012||General Committee Meeting||Milan, Italy|
|5 – 7 December 2011||General Committee Meeting||Houston, TX, USA|
|22 – 24 August 2011||General Committee Meeting||Houston, TX, USA|
|13 – 14 June 2011||General Committee Meeting||Copenhagen, Denmark|
|7 – 8 April 2011||General Committee Meeting||Denver, Colorado|
|14-16 June 2022||General Committee Meeting||NOV Headquarters, Hybrid|
|29-30 September 2022||General Committee Meeting||Pullman Hotel, Kuala Lumpur|
|6-8 December 2022||General Committee Meeting||IADC Headquarters|
Committee Meetings Policy
All dates and times are subject to change.
Dual Gradient Drilling (DGD) Subcommittee
Per Christian Stenshorne, Enhanced Drilling
Bing Yang, Shell
As defined by the IADC, DGD is “Two or more pressure gradients within selected well sections to manage the well pressure profile.”
Dual Gradient technology is not a new concept; the technology was thought of and developed on paper several decades ago. A field trial was successfully deployed in 2001 but never commercially developed. Today several developmental projects are under deployment on a commercial scale primarily in the Gulf of Mexico, the North Sea and several areas of the world.
Support the planning and organization of the 2015 combined Dual Gradient Well Control Workshop/IADC Well Control Conference of the Americas & Exhibition in Galveston.
Regularly update educational material on the four categories of Dual Gradient Drilling Techniques (click each link for additional information):
- Pre-BOP Riserless Mud Line Pumping
- Post-BOP Seabed Pumping
- Post-BOP Dilution
- Post-BOP Controlled Mud Level
- Post-BOP Positive Displacement Pump
Riser Gas Handling (RGH) Subcommittee
Omer Kaldrim, Pruitt
Oscar Gabaldon, Blade Energy Partners
HSE & Training Subcommittee
Guilherme Vanni, Petrobras
Matt Kvalo, Stasis Drilling Solutions
Managed Pressure Drilling (MPD) Subcommittee
Leiro Medina, Beyond Energy Services
Andre Fernandes, Petrobras
An adaptive drilling process used to precisely control the annual pressure profile throughout the wellbore.
The objectives are to ascertain the downhole pressure environment limits and to manage the annular hydraulic pressure profile accordingly. It is the intention of MPD to avoid continuous influx of formation fluids to the surface. Any influx incidental to the operation will be safely contained using an appropriate process.
- MPD process employs a collection of tools and techniques which may mitigate the risks and costs associated with drilling wells that have narrow downhole environmental limits, by proactively managing the annular hydraulic pressure profile.
- MPD may include control of back pressure, fluid density, fluid rheology, annular fluid level, circulating friction, and hole geometry, or combinations thereof.
- MPD may allow faster corrective action to deal with observed pressure variations. The ability to dynamically control annular pressures facilitates drilling of what might otherwise be economically unattainable prospects.
The MPD Subcommittee is currently drafting the following recommended practices for multiple variants of MPD including:
Category 5: Pressurized Mud Cap – systems used to drill without returns with an annulus fluid column assisted by surface pressure.
In addition, the subcommittee is focused on completing the deepwater supplement to the Category 2 (Surface Pressure) and Category 5 (Pressurized Mud cap) documents.
Category 1: Annular Friction – systems allowing for constant circulation during drill pipe connections, thereby using annular friction to maintain constant bottom hole pressure.
Category 3: Delta Energy – systems where energy is added to manipulate the wellbore pressure by the use of equipment within the wellbore.
Category 4: Hydrostatic Pressure – systems creating a non-uniform hydrostatic profile.
The MPD Subcommittee has completed the following recommended practices for multiple variants of MPD.
Category 2: Surface Pressure – systems manipulating annular pressure at surface to control and manage downhole pressures. This document is currently being reviewed by an API work group.
Micah Spahn, Pruitt
Joe Karigan, Halliburton
Underbalanced Operations (UBO) Subcommittee
Isabel Poletzky, Pruitt
Antonio Torrealba, Air Drilling Associates
Konstantin Puskarskij, Maersk Drilling
Well Control Liaison
Paul Sonnemann, Safekick
Certifying Authority Liaison
Harish Patel, ABS
Resources & Links
This page contains lists of all available resources, documents, videos for the Underbalanced Operations & Managed Pressure Drilling (UBO/MPD) Committee. These may include best practices, guidelines, and/or special reports, as well as documents on topics such as onshore/offshore safety issues, environmental practices, specific regulatory issues and more. Also included is a section for links to useful websites.
|Guidance for UBO and MPD Techniques for Land Operations||This document has been created to provide a referenced guidance for MPD operations executed specifically on land locations ensuring it remains aligned to API RP 92M that applies to MPD operations executed on drilling rigs/hoists with surface blowout preventers (BOPs) installed. The document also touches on other techniques UBD, RMD & PMCD.|
|Guidance for UBO and MPD Techniques for Land Operations Tool (Zip file)||The purpose of this tool is to give a concise quick reference guidance for MPD land operations. This document is aligned to API RP 92 series recommended practice and aims to give guidance on the recommended level of equipment , planning and competency that is required to mitigate the potential operational risks based on the following: Formation risks, Planning & Execution Competence. The driver / reason for utilizing MPD. Ultimately, the goal is to assist drilling engineers to deliver safe MPD operations.|
|MPD Tool||This is a Selection Guide for Users unfamiliar with Managed Pressure Drilling Techniques and their relative capabilities and limitations. By selecting the appropriate well data and objectives, this Selection Guide will give the User a ranking of potential technologies.
(Register to gain access to the MPD Tool by filling out the form. Your account will be created and a unique password will be assigned for this download. These credentials will be emailed to the email you provide. Once you log in, you will be able to download the MPD Tool.)
|MANAGED PRESSURE DRILLING OPERATIONS – Question submission form||As you might be aware, the IADC UBO & MPD Committee is working to establish an Accreditation Program on Managed Pressure Drilling Operations, Surface Backpressure, and Pressurized Mud Cap modes. The program will guide core curriculum development in three levels, Fundamental, Operations, and Supervisory, containing a body of knowledge and a set of job skills that can be used as a component of a competency program for Managed Pressure Drilling (MPD) operations. The final aim is to build and assure competency within the Industry on MPD operations by setting a standardized curriculum, minimum qualification requirements for instructors, and providing an industry-recognized certificate. This will support the promotion of safe and efficient execution of managed pressure drilling operations, SBP and PMCD, worldwide. We have currently finalized the revision of the Curriculum for the three levels and the next step is to create the test database.
We respectfully invite your participation to support this initiative with your technical expertise. Our intent is to collect questions anonymously from IADC members and industry contributors, to compose a preliminary question collection. These will be processed by the IADC UBO/MPD Committee, HSE and Training Subcommittee task force, building the Test Database for the MPD Accreditation Program.
IADC provides web links as a member service. IADC does not warranty or endorse the accuracy or reliability of any of the information, content, or advertisements contained on websites linked to www.iadc.org or any of its subsidiary pages.
API 16RCD Task Group
Updating API 16RCD, Specification for Rotating Control Devices
Underbalanced Operations Subcommittee
Updating API 92U, Specification Underbalanced Drilling Operations
Managed Pressure Drilling Subcommittee
Development of Influx Management Annex for API 92S and API 92M, Specification for MPD with Surface Back Pressure
Dual Gradient Drilling Subcommittee
Development API 92C, Specification for Controlled Mud Level Operations
Seeking funding to implement MPD training program as an IADC accredited course
Riser Gas Subcommittee
Alternative methods for handling gas in the riser
Well Control Committee Liaison
Maintain communication between Well Control and UBO/MPD Committee. Seeking opportunities to create MPD awareness in Wellsharp curriculum
Maintain communication between regulators and UBO/MPD Committee