Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
TOOL FOR CONSTRUCTION AND MAINTENANCE OF PETROLEUM WELLS
Document Type and Number:
WIPO Patent Application WO/2012/128635
Kind Code:
A1
Abstract:
The invention provides a tool for construction and maintenance of petroleum wells, comprising representation of a well or each well in a group of well categories, such as well in the drilling, completion, intervention, workover or abandonment phase. The tool is distinctive in that each well is represented by elements having a consistent shape and position of assembly as well as being presented on a standardized form with default wording that can be modified by the user. The invention also provides a method for the same purpose, distinctive by representing each well using a consistent shape and position of assembly. Further, the invention provides use of the tool and the method of the invention.

Inventors:
FJAAGESUND TORE (NO)
Application Number:
PCT/NO2012/000029
Publication Date:
September 27, 2012
Filing Date:
March 22, 2012
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
WELLBARRIER AS
FJAAGESUND TORE (NO)
International Classes:
E21B41/00; E21B43/00; E21B44/00; G06Q50/02
Domestic Patent References:
WO2006024865A12006-03-09
Foreign References:
US20020177955A12002-11-28
US20040122640A12004-06-24
EP1956506A22008-08-13
Attorney, Agent or Firm:
PROTECTOR IP CONSULTANTS AS (Oslo, NO)
Download PDF:
Claims:
CLAIMS

1.

Tool for construction and maintenance of petroleum wells, comprising representation of a well or each well in a group of well categories, such as well in the drilling, completion, intervention, workover or abandonment phase, characterised in that each well is represented by elements having a consistent shape and position of assembly. 2.

Tool according to claim 1, cha racterised in that the shape and width of each element is proportionally correct but the vertical dimension of well elements, curvature and optionally further selected geometrical parameters, can be varied as controlled by a user of the tool, and the assembly of the elements are arranged in a logical order or position so as to represent a functional well.

3.

Tool according to claim 1 or 2, cha racterised i n that the well barrier elements are consistently recognizable by having a distinctive shape, line type and/or width and a specific color for primary barriers and another specific color for secondary barriers.

4.

Tool according to claim 1,2 or 3, characterised in that a list of elements is part of the representation, the list is generated automatically as the well illustration is drafted, clicking on a list element leads to regulatory provisions and/or tools for identifying and quantifying effects of design, qualification, monitoring or failure of said element. 5.

Tool according to one of claim 1-4, characterised i n that at least the well barrier elements are highlighted by placing the cursor on the respective element, said element of a list of the elements and description thereof is highlighted simultaneously.

6.

Method for construction and maintenance of petroleum wells, comprising representation of a well or each well in a group of well categories, such as well in the drilling, completion, intervention, workover or abandonment phase, characterised by representing each well using a consistent shape and position of assembly. 7.

Method according to claim 6, characterised by using a fixed shape and width of each element, but varying the vertical dimension of well elements, and optionally further selected geometrical parameters, and arranging the elements in a logical order or position so as to represent a functional well, preferably representing the well barrier elements by having a distinctive shape, line type and/or width and a specific color for primary barriers and another specific color for secondary barriers.

8.

Method according to claim 6 or 7, characterised by generating a list of elements as part of the representation, preferably the list is generated automatically as the well representation is drafted and clicking on a list element leads to regulatory provisions and/or tools for identifying and quantifying effects of failure of said element, preferably at least the well barrier elements are highlighted by placing the cursor on the respective element and said element of said list of the elements and description thereof is highlighted simultaneously, preferably the generated listing will have standardized default wording for well barrier element qualification and monitoring that can be modified by the user. 9.

Use of a tool according to any one of claim 1 -5, for development and

maintenance of petroleum wells, particularly for avoiding effects of failure of an element of a well system but also for reducing the risk for making wrong decisions and reducing the time for representing, interpreting and developing a number of wells.

10.

Use of a method according to any one of claim 6-8, for development and maintenance of petroleum wells, particularly for avoiding effects of failure of an element of a well system but also for reducing the risk for making wrong decisions and reducing the time for representing, interpreting and developing a number of wells.

Description:
TOOL FOR CONSTRUCTION AND MAINTANANCE OF PETROLEUM WELLS Field of the invention

The present invention relates to construction and maintenance of wells for petroleum production, such as exploration, appraisal, production and injection wells. Background of the invention and prior art

Well integrity and definition of well barriers are important aspects when working on wells where petroleum reservoirs are exploited. Detailed drawings, such as "as built" drawings for barrier purpose, are often not available. Decision makers for construction and maintenance in the field will often find that the basis for decisions is missing and that there is a lack of overview of the well status. Wrong decisions, resulting in excessive spending and potential risk for health and safety, can be the result. A comprehensive job for providing the basis for decisions and providing a correct overview will often be required in order to reduce the risk of wrong decisions.

Currently many national regulators and industry standards require that well barriers are identified and employed to prevent discharge of hydrocarbons to the environment during drilling, well operations and production when exploiting oil and gas resources.

The standard Norsok D-010 rev. 3 gives examples on how this can be done by use of illustrations. But current industry practice is that this is either verbally described or only partially done by use of illustrations. When using illustrations there are no templates or tools available to prescribe how the well barrier definition shall be presented in a consistent manner.

When making illustrations the individual engineers can spend several hours on masterminding an application such as Microsoft Visio, Microsoft Excel, Microsoft Powerpoint or other applications to produce an illustration. As this is done by different people this has a tendency to end up as different looking graphical illustrations. Thus similar well cases might be drawn in different manners although they should have been identical. As much as 4 - 8 hours can be spent on making an illustration from scratch, if minor changes are to be made to existing material this could also take several hours.

The inconsistency of the well representation can result in wrong decisions and extensive work that should be avoided. The objective of the invention is to provide a tool, a method and use in order to construct and maintain petroleum wells, resulting in reduced failure rate of decisions and reduced work effort during construction, maintenance and operation of wells. Summary of the invention

The invention provides a tool for construction and maintenance of petroleum wells, comprising representation of a well or each well in a group of well categories, such as well in the drilling, completion, intervention, workover or abandonment phase. The tool is distinctive in that each well is represented by elements having a consistent shape and position of assembly.

Preferably the shape and width of each element represented is proportionally correct but the vertical dimension of well elements, curvature and optionally further selected geometrical parameters, can be varied as controlled by a user of the tool, and the assembly of the elements are arranged in a logical order or position so as to represent a functional well. With the term vertical dimension of well elements, it is meant the dimension along the longitudinal axis of the well or wellbore, which means that wells having deviated parts or side bores can be represented consistently.

The invention also provides a method for the same purpose, distinctive by representing each well using a consistent shape and position of assembly. The invention also provides use of the tool and the method of the invention, for illustration of well barrier elements in petroleum wells, particularly for avoiding effects of failure of an element of a well system but also for reducing the risk for making wrong decisions and reducing the time for representing, interpreting and developing illustrations with qualification and monitoring requirements.

Preferable embodiments of the tool and method of invention are defined in respective dependent claims. Figures

The invention is illustrated with figures, of which Figures 1-20 illustrate how a well representation is drafted with the tool of the invention.

Detailed description

Reference is made to Figures 1-20, illustrating how a well representation is drafted with the tool of the invention. The figures includes remarks, intended to make them self-explanatory. One embodiment of the invention is an electronic/web based tool to produce well barrier illustrations in an efficient and consistent repeated manner.

The invention will inter alia:

• provide a standardized graphical representation to the well illustrations · make it easier to compare one situation with another

• provide a standardized terminology as to how the requirements to qualify and monitor the barrier elements are presented verbally together with the illustration

• provide automatic fitting of components from a menu onto the assembled illustration

• provide manipulation of components through a submenu in order to

make the component more truly represented • provide annotation tools that allows the user to add comments to the illustration in such a manner that this is done in a consistent fashion

• make it easier to tailor-make illustrations to an actual well situation with a minimum of effort and time

· illustration will be less generic and more well specific

• automatically generate a barrier element listing based on the prepared illustration

• enable import of existing well data to set up basic illustration parameters

• provide a functionality to bend the curvature of the wellbore The invention will ensure that illustrations prepared by a company or by the industry will be presented in a graphically consistent manner. This will reduce the need for interpreting the well situation as it will always be presented in a consistent graphical fashion. The representation will always include the main well elements and the well barriers, and also representations for construction purposes without barrier definitions. The main well elements are the tubular elements constituting the well, the well barrier elements are the elements controlling the pressure in the well. Preferably also casing representations, well geology representations, well element representations, well angle representations, well barrier

representations, completion representations and pressure control equipment representations, are included, at a level of detail that can be chosen and configured by the user. Preferably the next level of detail can be reached by for example right button clicking on the specific element, the detailed information can be arranged in one or more layers of more detailed or more specific information, and can include for example detailed as built illustrations, simulation and analysis data, governing provisions and consequence simulations or analysis by failure of the element. It will make it easier for stakeholders to visualize and assess the consequences if a barrier element fails and what is the resulting effect, with subsequent protection and potential need for mitigating actions to be planned for. With availability of graphical components in a library, less time will be spent on producing the end products, this will allow the engineering resources to be spent on quality assuring the technical solutions rather than on masterminding the drawing application to illustrate the chosen solution.

The use of the invention will reduce numbers of hours needed to produce the necessary illustrations for a well activity. This can amount to several working days for a well activity with several illustration steps to be prepared. Having a proper well barrier definition clearly communicated to all stakeholders will give everyone a better possibility to prevent serious incidents that can have catastrophic effect and/or severe loss of revenue or reputation.

The principle of making illustrations available has been in existence. The distinctive features of this invention are inter alia as follows:

• A standardized illustration format is generated (Fig. 1 )

• Collection of produced and saved material in a logical library pr. country, area, field and well (Fig. 2, 13, 14, 17)

• Tabulated input to create hole and casing configuration illustration with associated information (Fig. 3, 4).

• Components available from a library will automatically fit into correct position/location when dragged from the library onto the illustration (Fig. 5, 6).

• Quick and easy adjustment of well configuration, reservoir sections, hole section length, casing setting depth, liner top setting depth and cement height behind casing/liner, (Fig. 7, 8)

• Functionality is based on drag-and-drop technology with use of right-click menus with ability to manipulate the appearance of components though a parameter set associated with the component (size, complexity, configuration, position) (Fig. 9, 10).

• Quick and easy exchange of lower completion configurations (open hole, perforated liner, screen liner, slotted liner, gravel packed screens, etc.) • Drilling BOP configuration representing actual rig BOP, such as number and type of rams and choke and kill line access points (Fig. 9)

• Enhanced annotation function for comments, alert comment and height definition (Fig. 11 , 12)

· Automatic generation of tabulated listing of well barrier elements on well barrier schematic form once identified on the illustration. This is accompanied by predefined default text for qualification and monitoring requirements than can be modified by the user. (Fig. 10, 15, 16)

• The produced work is exported to different user selected formats (Fig.

18, 19).

• The work is access limited to separate entities by log-on feature. This feature assigns the user logo onto the produced work for proprietary identification (Fig. 20).

The technical effect of the invention is expected to be considerable as it will provide a tool to consistently represent well integrity and barrier definitions in petroleum wells. The consistency and ease of use is believed to be a contributing factor to enhance stakeholders understanding of complex situations that can have high risk potentials.

The direct economic effect is amounting to 2-10.000+ USD pr well activity in time saving in preparation of the necessary working illustrations. This time saved can then be used on quality engineering safeguarding the upcoming work.

The potential economic effect of the invention is not derived from its direct use, but in its potential to prevent incidents, accidents and catastrophes.