... Abstract The circulating utilization of foam fluid is available, which was based on some of the lower carbon alcohols presenting the characteristics of both strong defoaming and weak restricting foam ability, and through optimum selection of formula by indoor experiments. The recirculable...

... width is between 10μm and 2.0mm, while the fracture width can reach up to 5.0mm during the well operations. Lost circulation, inducing severe reservoir damage and increasing non-productive time, happens more frequent. The traditional lost circulation control technologies such as physical, chemical...

... string and while the rig is on-site to save rig time and minimize expenditures. Yet, stimulating the well in this situation will increase its injectivty, which may lead to severe lost circulation problems and potentially serious well control issues. The objective of this paper is to present several field...

... oilfield for 5 years and also a good solution to shallow gas & water cementing and low pressure-easy-leakage formation cementing. migration cement slurry shallow gas casing and cementing hydration cement formulation strength development upstream oil & gas circulation water migration...

... stability, which could be used to control fluid loss in deep or ultra-deep well. The advantage of DNWR as a lost circulation is as follow: DNWR has excellent compressive strength; it could sustain a stress of 17.2MPa, which is more than 20 times that sustained by the component single-network gels...

... the liquefied gelling valve and casing valve were particularly introduced; 2) underbalanced horizontal drilling, which plays a more important role in developing fractured reservoirs; 3) gas drilling, which gains further enhancement in air hammer, circulated medium diversion, water production prediction...

... Abstract Lost circulation is a common problem in drilling project, especially the severe loss which consumes much material and costs much time, sometimes induced wellbore collapse, drill pipe sticking, overflow, blowout and well abandon at last. Based on theory of structure liquid...

... selection design. The model includes four sub-models for determining the quantitative risk due to lost circulation, kicking, collapse and sticking. The results can provide valuable information for designers. In one case study, we illustrate how this approach allows us to compute formation pressure profile...

... fluids and materials gypsum reservoir characterization circulation choke manifold Introduction Dina area as a main anticipative reservoir of Tarim Oilfield also lies in the structure of Tianshan mountains( Fig. 1 ), as mentioned earlier. It exists great difficulty and risk in drilling...

.... P. 223 build rate shixi oilfield drilling operation carboniferous formation circulation bha drilling displacement completion technology shale drilling parameter instability drill string stabilizer hole problem bent housing upstream oil & gas trajectory pipe horizontal...

... design, casing wear prevention and well drilling technical measures, etc. P. 95 drilling circulation drilling fluid drill string formation pore pressure drilling fluid management & disposal temperature drilling drilling operation society of petroleum engineers high pressure well...

... problem bridge plug society of petroleum engineers circulation means well control inflatable packer packer christmas tree casing and cementing annular pressure drilling valve injector head asia government eritrea government reservoir surveillance egypt government society drilling...

... shenyang oilfield enhanced recovery production rate shutoff agent waterflooding upstream oil & gas oilfield pvt measurement pour point crude oil hydraulic piston pump reservoir power fluid circulation sedimentary rock drilling fluid formulation drillstem/well testing asia government...

... injection production enhancement drillstem testing well logging drillstem/well testing artificial lift system petroleum engineer petroleum engineering circulation INTRODUCTION The Bridport reservoir is characterised by layers of sand (up to about 1 foot (0.3m) thickness) separated by thin...

... tabu platform oil base mud drillstem pala investment filtrate drillpipe production hole base mud guntong drilling operation torque upstream oil & gas tds successful application penetration rate epmi circulation stability mudrock completion installation and operations drilling...

... pressure drilling drilling reservoir well control drilling technique circulation deep drilling technique penetration rate sichuan basin upstream oil & gas average penetration rate footage ultradeep drilling structural geology casing and cementing directional drilling asia government...

... ABSTRACT During drilling or cementing, lost circulation may be encountered due to the presence of highly permeable formations, e.g. high natural permeability in a sandstone, or large natural fractures and vugs as found in limestones. This problem is critical as it increases the drilling costs...

... JZ20-2-10. The well geometry is shown in Fig. 1 . Test on cement slurry (1) Test conditions   Slurry density 1.85 kg/1   Mixing water fresh   Static bottom hole temperature 112 °C   Circulating botton hole temperature 82 °C   Testing pressure 39.8 MPa   Rate...

... gradient formation fracture pressure well control drilling fluid selection and formulation slurry density cement circulation upstream oil & gas cement job overburden stress cement property fracture extension pressure drilling fluid chemistry displacement casing and cementing united...

... between zones critical to drillstem testing and future production work. Use of high-strength microspheres (HSMS) as a cement additive has improved primary casing and liner cementing to the point that remedial squeeze cementing in the Gulf of Bohai is now a rarity. circulation bentonite strength...