Технологические решения для строительства эксплуатационной горизонтальной скважины глубиной 3100 метров на нефтяном месторождении Томской области

В общей и геологической части заданы стратиграфическая и литологическая характеристика разреза, свойства горных пород, изменения давления и температуры по разрезу скважины, нефтегазоводоносность. В технологической части представлены технологические решения для строительства скважины. Конструкция скважины состоит из направления, кондуктора, эксплуатационной колонны и хвостовика. Для бурения под направления выбран роторный способ, для остальных интервалов выбирается бурение винтовым забойным двигателем. Долота подобраны в зависимости от твердости и абразивности. Способ цементирования – прямой одноступенчатый. В специальной части описаны особенности заканчивания скважин в условиях аномально низких пластовых давлений.In the general and geological part, stratigraphic and lithological characteristics of the section, rock properties, changes in pressure and temperature along the borehole section, and oil and gas content are given. Technological solutions for the construction of the well are presented in the technological part. The well design consists of the direction, conductor, production string and shank. For drilling under directions, a rotary method is chosen, for the remaining intervals, drilling by a screw downhole motor is selected. Chisels are selected depending on hardness and abrasiveness. Cementing method - direct single-stage. A special section describes the features of completion of wells in conditions of abnormally low reservoir pressures

Анализ эффективности работы водогрейных котлоагрегатов при сжигании непроектного топлива районной котельной г. Междуреченска

Цель работыэнтальпия – Представить расчет раздел работыражениям котельной на непроектное средня топливо. В процессе исследования оперативной проводилисьдействия: укрупненный расчетпринте котла, рас- чет выбросов, обрудвания расчетхолднг на экономический эффект. В социальня результате исследования выявлено, что при отпущен переходеколичество с проектного на непроектноетраку увеличится расход расход топливаподмсквный на котел, чуть создание улучшится экологич- ность водяных выбросовобрудвание.The purpose of robotically is to Provide a calculation section rabotadatel the boiler on the average non-design fuel. In the research process, operational probabilistically: simplified accetpance the boiler emission calculations, obrudovanija, rescheduling on economic effect. In social the result of the study revealed that when released periodicamente with the design on nephroectomy will increase consumption consumption toplivopotreblenija to the boiler, just create improve the sustainability of water wypracowanie

Search for the Higgs boson in events with missing transverse energy and b quark jets produced in proton-antiproton collisions at s**(1/2)=1.96 TeV

We search for the standard model Higgs boson produced in association with an electroweak vector boson in events with no identified charged leptons, large imbalance in transverse momentum, and two jets where at least one contains a secondary vertex consistent with the decay of b hadrons. We use ~1 fb-1 integrated luminosity of proton-antiproton collisions at s**(1/2)=1.96 TeV recorded by the CDF II experiment at the Tevatron. We find 268 (16) single (double) b-tagged candidate events, where 248 +/- 43 (14.4 +/- 2.7) are expected from standard model background processes. We place 95% confidence level upper limits on the Higgs boson production cross section for several Higgs boson masses ranging from 110 GeV/c2 to 140 GeV/c2. For a mass of 115 GeV/c2 the observed (expected) limit is 20.4 (14.2) times the standard model prediction.Comment: 8 pages, 2 figures, submitted to Phys. Rev. Let

Studying the Underlying Event in Drell-Yan and High Transverse Momentum Jet Production at the Tevatron

We study the underlying event in proton-antiproton collisions by examining the behavior of charged particles (transverse momentum pT > 0.5 GeV/c, pseudorapidity |\eta| < 1) produced in association with large transverse momentum jets (~2.2 fb-1) or with Drell-Yan lepton-pairs (~2.7 fb-1) in the Z-boson mass region (70 < M(pair) < 110 GeV/c2) as measured by CDF at 1.96 TeV center-of-mass energy. We use the direction of the lepton-pair (in Drell-Yan production) or the leading jet (in high-pT jet production) in each event to define three regions of \eta-\phi space; toward, away, and transverse, where \phi is the azimuthal scattering angle. For Drell-Yan production (excluding the leptons) both the toward and transverse regions are very sensitive to the underlying event. In high-pT jet production the transverse region is very sensitive to the underlying event and is separated into a MAX and MIN transverse region, which helps separate the hard component (initial and final-state radiation) from the beam-beam remnant and multiple parton interaction components of the scattering. The data are corrected to the particle level to remove detector effects and are then compared with several QCD Monte-Carlo models. The goal of this analysis is to provide data that can be used to test and improve the QCD Monte-Carlo models of the underlying event that are used to simulate hadron-hadron collisions.Comment: Submitted to Phys.Rev.

Global Search for New Physics with 2.0/fb at CDF

Data collected in Run II of the Fermilab Tevatron are searched for indications of new electroweak-scale physics. Rather than focusing on particular new physics scenarios, CDF data are analyzed for discrepancies with the standard model prediction. A model-independent approach (Vista) considers gross features of the data, and is sensitive to new large cross-section physics. Further sensitivity to new physics is provided by two additional algorithms: a Bump Hunter searches invariant mass distributions for "bumps" that could indicate resonant production of new particles; and the Sleuth procedure scans for data excesses at large summed transverse momentum. This combined global search for new physics in 2.0/fb of ppbar collisions at sqrt(s)=1.96 TeV reveals no indication of physics beyond the standard model.Comment: 8 pages, 7 figures. Final version which appeared in Physical Review D Rapid Communication

Precision measurement of the top quark mass from dilepton events at CDF II

We report a measurement of the top quark mass, M_t, in the dilepton decay channel of $t\bar{t}\to b\ell'^{+}\nu_{\ell'}\bar{b}\ell^{-}\bar{\nu}_{\ell}$ using an integrated luminosity of 1.0 fb^{-1} of p\bar{p} collisions collected with the CDF II detector. We apply a method that convolutes a leading-order matrix element with detector resolution functions to form event-by-event likelihoods; we have enhanced the leading-order description to describe the effects of initial-state radiation. The joint likelihood is the product of the likelihoods from 78 candidate events in this sample, which yields a measurement of M_{t} = 164.5 \pm 3.9(\textrm{stat.}) \pm 3.9(\textrm{syst.}) \mathrm{GeV}/c^2, the most precise measurement of M_t in the dilepton channel.Comment: 7 pages, 2 figures, version includes changes made prior to publication by journa