Planning Your Intervention with Welltec®
Welltec’s services are carefully and properly planned to ensure high quality and full functionality of the solution chosen. Our rigorous standards and processes apply to all our services everywhere around the world.
Getting Started
The first step in the job planning process occurs when the customer contacts Welltec and supplies all relevant well specifications. Well specifications include at least three items (more specific information is needed when we perform customized services): a completion diagram (the assembly of down hole tubulars and equipment required to describe in words and pictures the layout of a well) and well trajectories (a 3-dimensional description of the well). Well trajectories are especially useful when a well system goes from vertical to horizontal and starts an upwards slope. Third item is caliper logs (a representation of the measured diameter of a borehole along its depth) Good information about the relation between completion diagram and caliper program helps ensure safe, optimal job planning.
As needed, the client also provides additional information such as hardness of a valve that needs to be milled out or type/size of obstruction to be removed. This information enables us to create a fishing diagram, a risk assessment and the WellSim™, that form the basic assessment of the job. The WellSim is our proprietary drag analysis program that provides the operator with a tool to confirm the technical feasibility of a Well Tractor operation. The WellSim will predict at what depth the Well Tractor needs to be started and what pull is required to get to any given depth in a well. The pick-up weight is calculated along with a recommended weak point.
The directional property of the well, inclination, turns and doglegs are taken into account along with restrictions and casing/hole conditions (friction) when calculating the tool string and cable drag.
The second step is to assess QHSE issues to ensure the health and safety of all personnel and equipment involved in the job. Afterwards, equipment and people are mobilized and sent to the job site.
If the job is with a new client, a newly completed well or a field we have not serviced before, we conduct a System Integration Test at a land-based test facility. Here the tool string is picked up and tested to ensure that all equipment is functioning and compatible. Usually, the client is part of the testing team.
Custom-ordered Services
If a client engages Welltec to design a new component for existing technology or even a completely new technology, the process is adjusted. Our R&D department designs the required technology after which all components undergo rigorous testing prior to assembly. Further internal tests are conducted and test reports are scrutinized.
Welltec welcomes client involvement throughout the entire process. If desired, a final verification test to verify functionality is carried out with the client present.
If the job involves third party companies (anyone else involved in the operation in addition to the client), a System Integration Test is also prepared. Subsequently, we conduct a drift run on site to verify that the tool string will run to the desired location within the well.
When the service has been delivered, a job report with event log is created by the responsible Welltec person on site. Results are tabulated and then scrutinized again by our QHSE department to ensure a continued service excellence.
|
