ПРОМЫВКА СКВАЖИНПромывка скважин -

ПРОМЫВКА СКВАЖИН
Промывка скважин - одна из самых ответственных операций, выполняемых при бурении. Первоначально назначение промывки ограничивалось очисткой забоя от частичек выбуренной породы и их выносом из скважины, а также охлаждением долота. Однако по мере развития бурового дела функции бурового раствора расширились.
Теперь сюда входят:
1.вынос частиц выбуренной породы из скважины;
2.передача энергии турбобуру или винтовому двигателю;
3.предупреждение поступления в скважину нефти, газа и воды;
4.удержание частичек разбуренной породы во взвешенном состоянии при прекращении циркуляции;
5.охлаждение и смазывание трущихся деталей долота;
6.уменьшение трения бурильных труб о стенки скважины;
7.предотвращение обвалов пород со стенок скважины;
8.уменьшение проницаемости стенок скважины, благодаря коркообразованию.
При бурении вращательным способом в скважине постоянно
циркулирует поток жидкости, которая ранее рассматривалась только как средство для удаления продуктов разрушения (шлама). В настоящее время она воспринимается, как один из главных факторов обеспечивающих эффективность всего процесса бурения. При проведении буровых работ циркулирующую в скважине жидкость принято называть - буровым раствором или промывочной жидкостью.
Буровой раствор кроме удаления шлама должен выполнять другие, в равной степени важные функции, направленные на эффективное, экономичное, и безопасное выполнение и завершение процесса бурения. По этой причине, состав буровых растворов и оценка его свойств становился темой большого объема научно- практических исследований и анализа.
В настоящее время в мировой практике наблюдается тенденция роста глубин бурения скважин, а как следствие, и увеличение опасности возникновения при этом различных осложнений. Кроме того, постоянно ужесточаются требования более полной и эффективной эксплуатации продуктивных пород. В этой связи буровой раствор должен иметь состав и свойства, которые обеспечивали бы возможность борьбы с большинством из возможных осложнений и не оказывали негативного воздействия на коллекторские свойства продуктивных горизонтов.

Результаты (английский) 1:

RINSING OF WELLSWashing of the wells is one of the most responsible drilling operations. The original purpose of flushing was limited to cleaning the cutting particles reach the breed and their removal from the well, as well as cooling the bit. However, as the business functions of the drilling mud weight expanded. Now includes:1. removal of particles of rock drill;2. turboburu power transmission or engine block;3. preventing entry into the well of oil, gas and water;4. retention of particles razburennoj breeds in suspension if the circulation;5. cooling and lubrication of rubbing parts of the bit;6. reduce the friction of the drill pipe wall well;7. Prevention of landslides of rocks from the borehole walls;8. reducing the permeability of walls of mining hole, thanks to korkoobrazovaniû.When drilling a twisting way in the well continuallycirculating fluid flow, which previously was seen only as a means to remove products of destruction (sludge). Currently, she is perceived as one of the main factors in ensuring the effectiveness of the entire drilling process. Drilling operations circulating in the borehole fluid called mud-mortar or washing liquid.Drilling mud disposal sludge should comply with other, equally important tasks aimed at the effective, economical and safe execution and completion of the drilling process. For this reason, the drilling and evaluation of its properties became the subject of extensive scientific research and analysis.Currently in the world there has been a trend of increasing drilling depths, and as a consequence, and increase the risk of the various complications. In addition, constantly tightened requirements more complete and efficient exploitation of productive breeds. In this regard, the boring solution must have a composition and properties, which would provide an opportunity to deal with the majority of possible complications and do not have a negative impact on reservoir properties of productive horizons.

Результаты (английский) 2:

Well flushing
Flushing wells - one of the most important operations carried out during the drilling. Initial appointment limited to cleaning washing the face of cuttings particles and their removal from the well, as well as cooling the bit. However, as the case of the drilling mud functions expanded.
Now here are:
1.vynos particles cuttings from the wellbore;
2.peredacha energy turbodrills or propeller engines;
3.preduprezhdenie admission into the well of oil, gas and water;
4.uderzhanie particles drilled rock suspended at the termination of circulation;
5.ohlazhdenie and lubrication of rubbing parts of the bit;
6.umenshenie friction drill pipe on the wall of the borehole;
7.predotvraschenie avalanches of rocks from the borehole walls;
8.umenshenie permeability of the walls of the well, thanks to crusting.
When drilling rotary method downhole constantly
circulates the liquid flow, which was previously considered only as a means to remove the degradation products (sludge). Currently, it is perceived as one of the main factors ensuring efficiency of the drilling process. During the drilling fluid circulating in the well called - mud or washing fluid.
The drilling fluid other than sludge must perform other equally important functions for the efficient, economical, and safe execution and completion of the drilling process. For this reason, the composition of drilling fluids and evaluation of its properties become the subject of a large volume of scientific and practical research and analysis.
Currently in the world there is a tendency growth of drilling depths, and as a consequence, increase the risk of various complications in this case. In addition, the constantly tightened requirements more complete and efficient use of productive breeds. In this regard, the mud should have a composition and properties, which should allow for the control of most of the possible complications and does not have a negative impact on the reservoir properties of productive horizons.

Результаты (английский) 3:

Flush wells
Flush wells is one of the most responsible operations performed on the drilling.Initially the appointment limited to flush clean meat particles from cuttings and their offset from the wells, as well as cooled chisels.However, as development drilling drilling case features have been expanded.
Now includes:
1.removal particles cuttings from wells;
2.energy transfer турбобуру or pluggable screw terminal engine;
3.Warning income in wells of oil, gas and water;
4.hold particles from cuttings in a balanced condition when the circulation;
5.cooling and lubrication parts rubbing bits;
6.Decreasing the friction drilling pipes on the wall wells;
7.preventing buildings from the wall rock wells;
8.decrease wall permeability wells, thanks коркообразованию.
When rotary drilling in these sediments is constantly
circulates fluid flow, which had previously been seen only as a tool to remove products of destruction (sludge). Currently, it is perceived,As one of the main factors that ensure the effectiveness of the overall process of drilling. When the drilling fluid recovery of health of the easiest method agreed to call - bored with a solution or rinse fluid.
Drilling rig solution in addition to removing sludge should be to carry out the other, equally important functions, aimed at the efficient, cost-effective, and secure the drilling and completion of the process. For this reason,The composition of the muds and an evaluation of its properties has become the subject of much of the volume of science and the practical research and analysis.
is currently in the world there is a trend toward growth drilling depths,As a consequence, and the increase in the risk of the various complications. In addition, constantly tightened requirements more fully productive and effective exploitation of species.In this regard drilling solution must have a composition and properties,That would provide an opportunity to fight with the majority of the possible complications and did not have a negative impact on the legal consultations properties productive horizons.