... Abstract Well integrity management for High Temperature (HT) wells can be challenging due to stresses and cyclic behaviour during thermal expansion or corrosive stress cracking that may impact the fatigue life of wellhead, tubing and casing. The impact can be catastrophic and detrimental...

... and identifiable lifting load pulses at the wellhead. Moreover, with the increasing opening of the adjusting valve, the lifting load increases significantly. The average load when the adjusting valve is fully opened is 33.65kN, an increase of 64.7% compared with the normal lifting load. When the adjusting valve...

... Abstract An increasingly common problem faced by subsea well operators is plugging and abandonment (P&A) of wells using modern drilling vessels. This challenge is due to older wellhead and conductor designs which are not fatigue resistant and which have less bending load capacity. Combined...

.... The screening criteria consist of cement quality and quantity, casing metallurgy and wellhead grade. The screening results will be categorized under three different risks; low, high and unknown-risk. Each of the categories and the evaluation methods will be discussed in-depth in this paper. The assessment...

... are crucial targets for gas well snubbing. To achieve this target, we developed a set of snubbing wellhead for low pressure gas well which operation pressure is less than 14MPa. Some key technologies are formed, such as airtight makeup and breakout device, gas sealing system, rotating slips etc. The unit can...

... Deepwater Well Well Design Wellhead weldon connector conservative design approach exploration well envelope conductor connector mudline integral connector slim well design rig structural conductor fatigue performance conductor system Introduction PETRONAS Carigali Brunei Ltd. (PCBL...

... lift equipment: gas-lift and BC. The objective is to maximize field oil/condensate production under other field operating constraints. The controllable parameters are: amount of gas to be injected into each oil well, well to be routed to BC, and wellhead flowing pressure from each well. The result...

...TOC effect on the wellhead movement and thermal force behavior Looking at Equations 1 , 5 , and 6 , one can see that the length of uncemented tubular in a well will affect the thermal force and wellhead movement. Fig. 2 , 3 show the thermal force and wellhead growth in relation...

... of appraisal / exploration wells in the East Timor Sea for a Joint Venture Group. The paper will review operations using three different rigs; one semi-submersible and two jack ups, each deploying a different wellhead configuration / method to drill exploration / appraisal wells in the same field. A review...

... Abstract This paper describes the development of a deepwater casing shoe which ensures subsea casing strings designed to land in a wellhead can be run to full wellbore depth with no rat hole. The problem with excess rat hole occurs when drilling and hole-cleaning operations enlarge a normally...

... learned were outlined and modifications were made to the blast joint and wellhead. Subsequent treatments were performed without mechanical failures with 350k and 282k lbs of proppant pumped at 30 to 35 bpm injection rates. The completion cycle time was reduced about 20% with substantial savings of up...

... Abstract Manual wellhead data collection is manpower intensive and requires significant time to collect and distribute in addition to the associated problems such as incomplete and missing data. Remote realtime well surveillance eliminated these problems by providing the data real-time...

... reservoir, with a static pressure of approximately 6,300psi, giving rise to a maximum wellhead pressure of about 4,500psi. There was a possibility of trace H 2 S in the reservoirs, but this trace was not seen during the perforating operations. Technical Challenges Remote Location The oil patch...

... lower zone communication operation personnel completion installation and operations Subsea Operation pipeline rig drilling rig Wellhead subsea intervention TRT well intervention valve production enhancement intervention riser Positioning System guideline petroleum engineer spe 101868...

... rate production rate production control correlation geometry gas velocity upstream oil & gas reservoir surveillance design 1 sand free production wellhead erosion production logging offtake rate shear stress calculation design 2 application choke ter university whfp erosion...

...Phase 2: Extending the concept The key enabler for further improvements was the close cooperation between the operator and wellhead supplier. Both parties agreed on the requirement to further improve the design and installation times of the CSW™ and established the exact requirements...

... production monitoring flow rate information neural network wellhead operation upstream oil & gas inflow performance thrasher machine learning oil well lift system optimization petroleum engineer reservoir-artificial spe 68700 vector reservoir surveillance artificial lift system...

... and controlling return circuit, the hydraulic cylinder is set in the working barrel under the wellhead. In order to collect the signal of the piston arriving the top and bottom dead center, the both stroke holes are set in the inner tube of the hydraulic cylinder. The wellhead's installation area and height...

... enhanced recovery remediation of hydrates wellhead phase 1 liquid holdup INTRODUCTION Esso Australia Pty Ltd (Esso) manages 17 production platforms of various sizes and five subsea wells on behalf of the Joint Venturers, Esso Australia Resources Pty Ltd and BHP Petroleum (Bass Strait) Pty Ltd...

... In stages 1 and 2, the lower lubricator assembly, consisting of the wellhead connector, wire-cutting gate valve, triple-ram BOP, hydraulic latch, and guide frame, is deployed and attached to the subsea tree. An operator-supplied tree running tool is used to connect the lower lubricator assembly...